Egg water from the amphibian Bufo arenarum induces capacitation-like changes in homologous spermatozoa.
Krapf D, Visconti PE, Arranz SE, Cabada MO. Egg water from the amphibian Bufo arenarum induces capacitation-like changes in homologous spermatozoa. Dev Biol. 2007 Jun 15; 306(2):516-24.