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Michail Fischberg was well aware of the value of genetics in developmental biology, and when I joined him, he had just started using Xenopus as a laboratory animal, on the grounds that it could be grown to sexual maturity within a year and that, as it is wholly aquatic, it is easy to keep in the laboratory. Xenopus can deliver eggs throughout the year, in contrast to the limited-season availability of eggs from Rana and European newts, the organisms of choice for European embryologists. The history of how a frog that naturally occurs only in Africa has come to be one of the half-dozen most used animals for research is bizarre . (en) |
