
John has Chaired 5 symposia in the U.S. and Germany on the cellular origins of vertebrate physiology. His latest Review Article in Perspectives in Biology and Medicine, Evolutionary Biology Redux, starts with the premise that physiology and medicine are descriptive rather than mechanistic, obviating the possibility of hypothesis testing experimental evidence for evolution. This is due to the scant attention to cellular biology and cellular dynamics' of cell biology in Evolution Theory. By starting from the unicellular origins of life, moving forward, the origins of complex physiology become transparent, offering the possibility of a Central Theory of Biology.