Scientists develop marmoset eggs and embryos from xenotransplanted ovary tissues

Marmosets are now used in medical and pharmacological research as a model animal of non-human primates. Recently, genetically modified marmosets are also used in research to elucidate human pathology, higher brain functions, etc. However, generation of genetically modified marmosets requires a large number of eggs, and the method of harvesting eggs from female marmosets raises issues of animal welfare and costs.