Charles N. Allen - Publications

Oregon Health and Science University, Portland, OR 
circadian rhythms, suprachiasmatic nucleus electrophysiology

80 high-probability publications. We are testing a new system for linking publications to authors. You can help! If you notice any inaccuracies, please sign in and mark papers as correct or incorrect matches. If you identify any major omissions or other inaccuracies in the publication list, please let us know.

Year Citation  Score
2020 Todd WD, Venner A, Anaclet C, Broadhurst RY, De Luca R, Bandaru SS, Issokson L, Hablitz LM, Cravetchi O, Arrigoni E, Campbell JN, Allen CN, Olson DP, Fuller PM. Suprachiasmatic VIP neurons are required for normal circadian rhythmicity and comprised of molecularly distinct subpopulations. Nature Communications. 11: 4410. PMID 32879310 DOI: 10.1038/s41467-020-17197-2  0.72
2020 Hablitz LM, Gunesch AN, Cravetchi O, Moldavan M, Allen CN. Cannabinoid signaling recruits astrocytes to modulate presynaptic function in the Suprachiasmatic Nucleus. Eneuro. PMID 31964686 DOI: 10.1523/ENEURO.0081-19.2020  0.72
2018 Moldavan MG, Sollars PJ, Lasarev MR, Allen CN, Pickard GE. Circadian Behavioral Responses to Light and Optic Chiasm-Evoked Glutamatergic EPSCs in the Suprachiasmatic Nucleus of ipRGC Conditional vGlut2 Knock-Out Mice. Eneuro. 5. PMID 29756029 DOI: 10.1523/ENEURO.0411-17.2018  0.4
2017 Moldavan MG, Cravetchi O, Allen CN. GABA transporters regulate tonic and synaptic GABAA receptor-mediated currents in the Suprachiasmatic Nucleus Neurons. Journal of Neurophysiology. jn.00194.2017. PMID 28855287 DOI: 10.1152/jn.00194.2017  0.72
2017 Matus-Ortega ME, Leff Gelman P, Calva-Nieves JC, Flores-Zamora A, Salazar-Juárez A, Torner-Aguilar CA, Gamba G, De Los Heros P, Peng B, Pintar JE, Gompf HS, Allen CN, Antón-Palma B. Mexneurin is a novel precursor of peptides in the central nervous system of rodents. Febs Letters. PMID 28504339 DOI: 10.1002/1873-3468.12679  0.92
2015 Zuloaga DG, Iancu OD, Weber S, Etzel D, Marzulla T, Stewart B, Allen CN, Raber J. Enhanced functional connectivity involving the ventromedial hypothalamus following methamphetamine exposure. Frontiers in Neuroscience. 9: 326. PMID 26441501 DOI: 10.3389/fnins.2015.00326  0.92
2015 Moldavan M, Cravetchi O, Williams M, Irwin RP, Aicher SA, Allen CN. Localization and expression of GABA transporters in the suprachiasmatic nucleus. The European Journal of Neuroscience. PMID 26390912 DOI: 10.1111/ejn.13083  0.92
2015 Allen CN, Klett NJ, Irwin RP, Moldavan MG. Gabaa receptor-mediated neurotransmission in the suprachiasmatic nucleus Mechanisms of Circadian Systems in Animals and Their Clinical Relevance. 133-147. DOI: 10.1007/978-3-319-08945-4_8  0.92
2013 Irwin RP, Allen CN. Simultaneous electrophysiological recording and calcium imaging of suprachiasmatic nucleus neurons. Journal of Visualized Experiments : Jove. 50794. PMID 24335611 DOI: 10.3791/50794  0.92
2013 Diekman CO, Belle MD, Irwin RP, Allen CN, Piggins HD, Forger DB. Causes and consequences of hyperexcitation in central clock neurons. Plos Computational Biology. 9: e1003196. PMID 23990770 DOI: 10.1371/journal.pcbi.1003196  0.92
2013 Olsen RH, Allen CN, Derkach VA, Phillips TJ, Belknap JK, Raber J. Impaired memory and reduced sensitivity to the circadian period lengthening effects of methamphetamine in mice selected for high methamphetamine consumption. Behavioural Brain Research. 256: 197-204. PMID 23954232 DOI: 10.1016/j.bbr.2013.08.015  0.92
2013 Moldavan MG, Allen CN. GABAB receptor-mediated frequency-dependent and circadian changes in synaptic plasticity modulate retinal input to the suprachiasmatic nucleus. The Journal of Physiology. 591: 2475-90. PMID 23401614 DOI: 10.1113/jphysiol.2012.248047  0.92
2012 Eastwood E, Allen CN, Raber J. Effects of neonatal methamphetamine and thioperamide exposure on spatial memory retention and circadian activity later in life. Behavioural Brain Research. 230: 229-36. PMID 22330947 DOI: 10.1016/j.bbr.2012.02.003  0.92
2011 An S, Irwin RP, Allen CN, Tsai C, Herzog ED. Vasoactive intestinal polypeptide requires parallel changes in adenylate cyclase and phospholipase C to entrain circadian rhythms to a predictable phase. Journal of Neurophysiology. 105: 2289-96. PMID 21389307 DOI: 10.1152/jn.00966.2010  0.92
2010 Irwin RP, Allen CN. Neuropeptide-mediated calcium signaling in the suprachiasmatic nucleus network. The European Journal of Neuroscience. 32: 1497-506. PMID 21039959 DOI: 10.1111/j.1460-9568.2010.07411.x  0.92
2010 Ruggiero L, Allen CN, Brown RL, Robinson DW. Mice with early retinal degeneration show differences in neuropeptide expression in the suprachiasmatic nucleus. Behavioral and Brain Functions : Bbf. 6: 36. PMID 20604961 DOI: 10.1186/1744-9081-6-36  0.92
2010 Moldavan MG, Allen CN. Retinohypothalamic tract synapses in the rat suprachiasmatic nucleus demonstrate short-term synaptic plasticity. Journal of Neurophysiology. 103: 2390-9. PMID 20220078 DOI: 10.1152/jn.00695.2009  0.92
2009 Irwin RP, Allen CN. GABAergic signaling induces divergent neuronal Ca2+ responses in the suprachiasmatic nucleus network. The European Journal of Neuroscience. 30: 1462-75. PMID 19821838 DOI: 10.1111/j.1460-9568.2009.06944.x  0.92
2009 Fenoglio-Simeone KA, Wilke JC, Milligan HL, Allen CN, Rho JM, Maganti RK. Ketogenic diet treatment abolishes seizure periodicity and improves diurnal rhythmicity in epileptic Kcna1-null mice. Epilepsia. 50: 2027-34. PMID 19490051 DOI: 10.1111/j.1528-1167.2009.02163.x  0.92
2009 Ruggiero L, Allen CN, Brown RL, Robinson DW. The development of melanopsin-containing retinal ganglion cells in mice with early retinal degeneration. The European Journal of Neuroscience. 29: 359-67. PMID 19200239 DOI: 10.1111/j.1460-9568.2008.06589.x  0.92
2008 Allen CN. Circadian rhythms, diet, and neuronal excitability. Epilepsia. 49: 124-6. PMID 19049609 DOI: 10.1111/j.1528-1167.2008.01856.x  0.92
2008 Tremere LA, Pinaud R, Irwin RP, Allen CN. Postinhibitory rebound spikes are modulated by the history of membrane hyperpolarization in the SCN. The European Journal of Neuroscience. 28: 1127-35. PMID 18783377 DOI: 10.1111/j.1460-9568.2008.06410.x  0.92
2008 Alvado L, Allen CN. Tetraethylammonium (TEA) increases the inactivation time constant of the transient K+ current in suprachiasmatic nucleus neurons. Brain Research. 1221: 24-9. PMID 18561902 DOI: 10.1016/j.brainres.2008.05.025  0.92
2007 Hartwick AT, Bramley JR, Yu J, Stevens KT, Allen CN, Baldridge WH, Sollars PJ, Pickard GE. Light-evoked calcium responses of isolated melanopsin-expressing retinal ganglion cells. The Journal of Neuroscience : the Official Journal of the Society For Neuroscience. 27: 13468-80. PMID 18057205 DOI: 10.1523/JNEUROSCI.3626-07.2007  0.92
2007 Irwin RP, Allen CN. Calcium response to retinohypothalamic tract synaptic transmission in suprachiasmatic nucleus neurons. The Journal of Neuroscience : the Official Journal of the Society For Neuroscience. 27: 11748-57. PMID 17959816 DOI: 10.1523/JNEUROSCI.1840-07.2007  0.92
2006 Li D, Parks SB, Kushner JD, Nauman D, Burgess D, Ludwigsen S, Partain J, Nixon RR, Allen CN, Irwin RP, Jakobs PM, Litt M, Hershberger RE. Mutations of presenilin genes in dilated cardiomyopathy and heart failure. American Journal of Human Genetics. 79: 1030-9. PMID 17186461 DOI: 10.1086/509900  0.92
2006 Perez-Leon JA, Warren EJ, Allen CN, Robinson DW, Brown RL. Synaptic inputs to retinal ganglion cells that set the circadian clock. The European Journal of Neuroscience. 24: 1117-23. PMID 16930437 DOI: 10.1111/j.1460-9568.2006.04999.x  0.92
2006 Gompf HS, Irwin RP, Allen CN. Retrograde suppression of GABAergic currents in a subset of SCN neurons. The European Journal of Neuroscience. 23: 3209-16. PMID 16820011 DOI: 10.1111/j.1460-9568.2006.04850.x  0.92
2006 Moldavan MG, Irwin RP, Allen CN. Presynaptic GABA(B) receptors regulate retinohypothalamic tract synaptic transmission by inhibiting voltage-gated Ca2+ channels. Journal of Neurophysiology. 95: 3727-41. PMID 16709723 DOI: 10.1152/jn.00909.2005  0.92
2006 Warren EJ, Allen CN, Brown RL, Robinson DW. The light-activated signaling pathway in SCN-projecting rat retinal ganglion cells. The European Journal of Neuroscience. 23: 2477-87. PMID 16706854 DOI: 10.1111/j.1460-9568.2006.04777.x  0.92
2006 Morin LP, Allen CN. The circadian visual system, 2005. Brain Research Reviews. 51: 1-60. PMID 16337005 DOI: 10.1016/j.brainresrev.2005.08.003  0.92
2005 Teshima K, Minoguchi M, Tounai S, Ashimori A, Eguchi J, Allen CN, Shibata S. Nonphotic entrainment of the circadian body temperature rhythm by the selective ORL1 receptor agonist W-212393 in rats. British Journal of Pharmacology. 146: 33-40. PMID 15980870 DOI: 10.1038/sj.bjp.0706311  0.92
2005 Gompf HS, Moldavan MG, Irwin RP, Allen CN. Nociceptin/orphanin FQ (N/OFQ) inhibits excitatory and inhibitory synaptic signaling in the suprachiasmatic nucleus (SCN). Neuroscience. 132: 955-65. PMID 15857701 DOI: 10.1016/j.neuroscience.2004.11.057  0.92
2004 Gompf HS, Allen CN. GABAergic synapses of the suprachiasmatic nucleus exhibit a diurnal rhythm of short-term synaptic plasticity. The European Journal of Neuroscience. 19: 2791-8. PMID 15147312 DOI: 10.1111/j.1460-9568.2004.03382.x  0.92
2004 Ikeda M, Suzuki S, Kishio M, Hirono M, Sugiyama T, Matsuura J, Suzuki T, Sota T, Allen CN, Konishi S, Yoshioka T. Hydrogen-deuterium exchange effects on beta-endorphin release from AtT20 murine pituitary tumor cells. Biophysical Journal. 86: 565-75. PMID 14695301 DOI: 10.1016/S0006-3495(04)74135-1  0.92
2004 Jobst EE, Robinson DW, Allen CN. Potential pathways for intercellular communication within the calbindin subnucleus of the hamster suprachiasmatic nucleus. Neuroscience. 123: 87-99. PMID 14667444 DOI: 10.1016/j.neuroscience.2003.08.059  0.92
2003 Teshima K, Kim SH, Allen CN. Characterization of an apamin-sensitive potassium current in suprachiasmatic nucleus neurons. Neuroscience. 120: 65-73. PMID 12849741 DOI: 10.1016/S0306-4522(03)00270-7  0.92
2003 Warren EJ, Allen CN, Brown RL, Robinson DW. Intrinsic light responses of retinal ganglion cells projecting to the circadian system. The European Journal of Neuroscience. 17: 1727-35. PMID 12752771 DOI: 10.1046/j.1460-9568.2003.02594.x  0.92
2003 Ikeda M, Sugiyama T, Wallace CS, Gompf HS, Yoshioka T, Miyawaki A, Allen CN. Circadian dynamics of cytosolic and nuclear Ca2+ in single suprachiasmatic nucleus neurons. Neuron. 38: 253-63. PMID 12718859 DOI: 10.1016/S0896-6273(03)00164-8  0.92
2003 Ikeda M, Allen CN. Developmental changes in calbindin-D28k and calretinin expression in the mouse suprachiasmatic nucleus. The European Journal of Neuroscience. 17: 1111-8. PMID 12653988 DOI: 10.1046/j.1460-9568.2003.02515.x  0.92
2003 Ikeda M, Yoshioka T, Allen CN. Developmental and circadian changes in Ca2+ mobilization mediated by GABAA and NMDA receptors in the suprachiasmatic nucleus. The European Journal of Neuroscience. 17: 58-70. PMID 12534969 DOI: 10.1046/j.1460-9568.2003.02427.x  0.92
2002 Jobst EE, Allen CN. Calbindin neurons in the hamster suprachiasmatic nucleus do not exhibit a circadian variation in spontaneous firing rate. The European Journal of Neuroscience. 16: 2469-74. PMID 12492442 DOI: 10.1046/j.1460-9568.2002.02309.x  0.92
2001 Ikeda M, Sagara M, Sekino Y, Shirao T, Honda K, Yoshioka T, Allen CN, Inoué S. The sulphydryl reagent, N-ethylmaleimide, disrupts sleep and blocks A1 adenosine receptor-mediated inhibition of intracellular calcium signaling in the in vitro ventromedial preoptic nucleus. Neuroscience. 106: 733-43. PMID 11682159 DOI: 10.1016/S0306-4522(01)00290-1  0.92
2001 Burrows GG, Chou YK, Wang C, Chang JW, Finn TP, Culbertson NE, Kim J, Bourdette DN, Lewinsohn DA, Lewinsohn DM, Ikeda M, Yoshioka T, Allen CN, Offner H, Vandenbark AA. Rudimentary TCR signaling triggers default IL-10 secretion by human Th1 cells. Journal of Immunology (Baltimore, Md. : 1950). 167: 4386-95. PMID 11591763  0.92
2001 Nelson CS, Ikeda M, Gompf HS, Robinson ML, Fuchs NK, Yoshioka T, Neve KA, Allen CN. Regulation of melatonin 1a receptor signaling and trafficking by asparagine-124. Molecular Endocrinology (Baltimore, Md.). 15: 1306-17. PMID 11463855 DOI: 10.1210/mend.15.8.0681  0.92
2001 Ikeda M, Nelson CS, Shinagawa H, Shinoe T, Sugiyama T, Allen CN, Grandy DK, Yoshioka T. Cyclic AMP regulates the calcium transients released from IP(3)-sensitive stores by activation of rat kappa-opioid receptors expressed in CHO cells. Cell Calcium. 29: 39-48. PMID 11133354 DOI: 10.1054/ceca.2000.0161  0.92
2000 Jiang ZG, Teshima K, Yang Y, Yoshioka T, Allen CN. Pre- and postsynaptic actions of serotonin on rat suprachiasmatic nucleus neurons. Brain Research. 866: 247-56. PMID 10825500 DOI: 10.1016/S0006-8993(00)02294-0  0.92
2000 Ikeda M, Sugiyama T, Suzuki K, Moriya T, Shibata S, Katsuki M, Allen CN, Yoshioka T. PLC beta 4-independent Ca2+ rise via muscarinic receptors in the mouse suprachiasmatic nucleus. Neuroreport. 11: 907-12. PMID 10790853  0.92
1999 Omelchenko IA, Jain RK, Junaid MA, Rao SL, Allen CN. Neurotoxic potential of three structural analogs of beta-N-oxalyl-alpha,beta-diaminopropanoic acid (beta-ODAP). Neurochemical Research. 24: 791-7. PMID 10447464 DOI: 10.1023/A:1020791815848  0.92
1999 Nelson CS, Marino JL, Allen CN. Melatonin receptor potentiation of cyclic AMP and the cystic fibrosis transmembrane conductance regulator ion channel. Journal of Pineal Research. 26: 113-21. PMID 10100738  0.92
1999 Allen CN, Jiang ZG, Teshima K, Darland T, Ikeda M, Nelson CS, Quigley DI, Yoshioka T, Allen RG, Rea MA, Grandy DK. Orphanin-FQ/nociceptin (OFQ/N) modulates the activity of suprachiasmatic nucleus neurons. The Journal of Neuroscience : the Official Journal of the Society For Neuroscience. 19: 2152-60. PMID 10066268  0.92
1997 Omelchenko IA, Nelson CS, Allen CN. Lead inhibition of N-methyl-D-aspartate receptors containing NR2A, NR2C and NR2D subunits. The Journal of Pharmacology and Experimental Therapeutics. 282: 1458-64. PMID 9316859  0.92
1997 Zauner A, Doppenberg E, Woodward JJ, Allen C, Jebraili S, Young HF, Bullock R. Multiparametric continuous monitoring of brain metabolism and substrate delivery in neurosurgical patients. Neurological Research. 19: 265-73. PMID 9192379 DOI: 10.1080/01616412.1997.11740812  0.92
1997 Nelson CS, Marino JL, Allen CN. Cloning and characterization of Kir3.1 (GIRK1) C-terminal alternative splice variants. Brain Research. Molecular Brain Research. 46: 185-96. PMID 9191093 DOI: 10.1016/S0169-328X(96)00301-4  0.92
1997 Jiang ZG, Yang YQ, Allen CN. Tracer and electrical coupling of rat suprachiasmatic nucleus neurons. Neuroscience. 77: 1059-66. PMID 9130787 DOI: 10.1016/S0306-4522(96)00539-8  0.92
1997 Jiang ZG, Yang Y, Liu ZP, Allen CN. Membrane properties and synaptic inputs of suprachiasmatic nucleus neurons in rat brain slices. The Journal of Physiology. 499: 141-59. PMID 9061646  0.92
1996 Omelchenko IA, Nelson CS, Marino JL, Allen CN. The sensitivity of N-methyl-D-aspartate receptors to lead inhibition is dependent on the receptor subunit composition. The Journal of Pharmacology and Experimental Therapeutics. 278: 15-20. PMID 8764330  0.92
1996 Nelson CS, Marino JL, Allen CN. Melatonin receptors activate heteromeric G-protein coupled Kir3 channels. Neuroreport. 7: 717-20. PMID 8733729  0.92
1995 Nelson CS, Cone RD, Robbins LS, Allen CN, Adelman JP. Cloning and expression of a 5HT7 receptor from Xenopus laevis. Receptors & Channels. 3: 61-70. PMID 8589994  0.92
1995 Riepe M, Spencer PS, Lambein F, Ludolph AC, Allen CN. In vitro toxicological investigations of isoxazolinone amino acids of Lathyrus sativus. Natural Toxins. 3: 58-64. PMID 7749584 DOI: 10.1002/nt.2620030111  0.92
1995 Jiang ZG, Allen CN, North RA. Presynaptic inhibition by baclofen of retinohypothalamic excitatory synaptic transmission in rat suprachiasmatic nucleus. Neuroscience. 64: 813-9. PMID 7715789 DOI: 10.1016/0306-4522(94)00429-9  0.92
1995 Jiang ZG, Nelson CS, Allen CN. Melatonin activates an outward current and inhibits Ih in rat suprachiasmatic nucleus neurons. Brain Research. 687: 125-32. PMID 7583297 DOI: 10.1016/0006-8993(95)00478-9  0.92
1995 Allen CN, Omelchenko I, Ross SM, Spencer P. The neurotoxin, beta-N-methylamino-L-alanine (BMAA) interacts with the strychnine-insensitive glycine modulatory site of the N-methyl-D-aspartate receptor. Neuropharmacology. 34: 651-8. PMID 7566501 DOI: 10.1016/0028-3908(95)00043-6  0.92
1994 Spencer PS, Allen CN, Kisby GE, Ludolph AC. On the etiology and pathogenesis of chemically induced neurodegenerative disorders. Neurobiology of Aging. 15: 265-7. PMID 7838308 DOI: 10.1016/0197-4580(94)90129-5  0.92
1993 Allen CN, Spencer PS, Carpenter DO. Beta-N-methylamino-L-alanine in the presence of bicarbonate is an agonist at non-N-methyl-D-aspartate-type receptors. Neuroscience. 54: 567-74. PMID 7687332 DOI: 10.1016/0306-4522(93)90228-8  0.92
1992 Riepe M, Hori N, Ludolph AC, Carpenter DO, Spencer PS, Allen CN. Inhibition of energy metabolism by 3-nitropropionic acid activates ATP-sensitive potassium channels. Brain Research. 586: 61-6. PMID 1355004 DOI: 10.1016/0006-8993(92)91371-K  0.92
1991 Spencer PS, Allen CN, Kisby GE, Ludolph AC, Ross SM, Roy DN. Lathyrism and western Pacific amyotrophic lateral sclerosis: etiology of short and long latency motor system disorders. Advances in Neurology. 56: 287-99. PMID 1906674  0.92
1990 Oyama Y, Hori N, Allen CN, Carpenter DO. Influences of trypsin and collagenase on acetylcholine responses of physically isolated single neurons of Aplysia californica. Cellular and Molecular Neurobiology. 10: 193-205. PMID 2163751 DOI: 10.1007/BF00734573  0.92
1990 Bigornia L, Allen CN, Jan CR, Lyon RA, Titeler M, Schneider AS. D2 dopamine receptors modulate calcium channel currents and catecholamine secretion in bovine adrenal chromaffin cells. The Journal of Pharmacology and Experimental Therapeutics. 252: 586-92. PMID 2156054  0.92
1989 Oyama Y, Hori N, Evans ML, Allen CN, Carpenter DO. Electrophysiological estimation of the actions of acetylcholinesterase inhibitors on acetylcholine receptor and cholinesterase in physically isolated Aplysia neurones. British Journal of Pharmacology. 96: 573-82. PMID 2720293  0.92
1988 Oyama Y, King WM, Allen CN, Hori N, Carpenter DO. Characterization of an inward current elicited by edrophonium in physically isolated and internally perfused Aplysia neurons. Brain Research. 463: 124-32. PMID 3196901 DOI: 10.1016/0006-8993(88)90534-3  0.92
1988 Allen CN, Brady R, Swann J, Hori N, Carpenter DO. N-methyl-D-aspartate (NMDA) receptors are inactivated by trypsin. Brain Research. 458: 147-50. PMID 2850076 DOI: 10.1016/0006-8993(88)90507-0  0.92
1987 Allen CN, Albuquerque EX. Conductance properties of GABA-activated chloride currents recorded from cultured hippocampal neurons. Brain Research. 410: 159-63. PMID 2438013 DOI: 10.1016/S0006-8993(87)80039-2  0.92
1986 Swanson KL, Allen CN, Aronstam RS, Rapoport H, Albuquerque EX. Molecular mechanisms of the potent and stereospecific nicotinic receptor agonist (+)-anatoxin-a. Molecular Pharmacology. 29: 250-7. PMID 2419745  0.92
1986 Allen CN, Albuquerque EX. Characteristics of acetylcholine-activated channels of innervated and chronically denervated skeletal muscles. Experimental Neurology. 91: 532-45. PMID 2419153 DOI: 10.1016/0014-4886(86)90050-6  0.92
1985 Myhrer T, Allen CN. Hippocampal EEG changes in rats following cerebellar lesions. Physiology & Behavior. 35: 377-82. PMID 4070411 DOI: 10.1016/0031-9384(85)90312-9  0.92
1985 Naalsund LU, Allen CN, Fonnum F. Changes in neurobiological parameters in the hippocampus after exposure to trimethyltin. Neurotoxicology. 6: 145-58. PMID 2864673  0.92
1984 Allen CN, Crawford IL. GABAergic agents in the medial septal nucleus affect hippocampal theta rhythm and acetylcholine utilization. Brain Research. 322: 261-7. PMID 6509317 DOI: 10.1016/0006-8993(84)90116-1  0.92
1984 Allen CN, Akaike A, Albuquerque EX. The frog interosseal muscle fiber as a new model for patch clamp studies of chemosensitive- and voltage-sensitive ion channels: actions of acetylcholine and batrachotoxin. Journal De Physiologie. 79: 338-43. PMID 6099417  0.92
1984 Allen CN, Fonnum F. Trimethyltin inhibits the activity of hippocampal neurons recorded in vitro. Neurotoxicology. 5: 23-30. PMID 6097851  0.92
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