[Morphological study of a homogenous population of teratocarcinoma cells]

When an experimental teratocarcinoma was injected into the peritoneal cavity of isogenous 129/Sv mice, ascites developed and cell aggregates known as embryoid bodies were isolated from the ascitic fluid. Ficoll gradients have been used to seperate the embryoid bodies and their evolution in the peritoneal cavity has been followed by scanning electron microscopy.