Frederick Gymer
Parsons

London University, St. Thomas's Hospital Medical School






Raymond Arthur
Dart

University of the Witwatersrand




Oscar
Hertwig

Universität Berlin


Giuseppe
Levi

University of Torino


Hans
Spemann

Albert-Ludwigs-Universität Freiburg


Viktor
Hamburger

Washington University





Gonzalo
Alvarez-Bolado

Max Planck Institute of Biophysical Chemistry Gottingen
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Gonzalo Alvarez-BoladoX