Stories by J. B. Gurdon

Purified genes microinjected into an amphibian oocyte can be "read" accurately and abundantly. The oocyte may serve as a living test tube for studying the molecular details of gene regulation in development

The nucleus of a cell from a frog's intestine is transplanted into a frog's egg and gives rise to a normal frog. Such experiments aid the study of how genes are controlled during embryonic development