in the case of the cytomitins in my own department i am sure that dr. elster would be the first to agree ( although he was no doubt distracted from saying so at the end of his talk by the lively prank played on him by persons unknown ) that it was in fact dr. gordon who originally demonstrated the synergism of the two fractions which he has subsequently so elegantly characterized as cytomitins a and b , but we await eagerly further chemical characterization of the differences between a and b , and we also await with excitement dr. gordons elegant biological characterization of the events of the cell cycle that are affected by these agents later this evening . ''