The European Xenopus Resource Centre (EXRC)

The European Xenopus Resource Centre (EXRC) supplies frogs, eggs, antibodies, and DNA to laboratories across Europe, acting as a central warehouse for one of biology’s most versatile research animals. Xenopus frogs are workhorses of fundamental science. Their large, robust eggs and embryos allow researchers to watch cell division, gene activity, and organ development in real time—things that are difficult or impossible to study in mice or humans. Without a central repository, individual labs would have to breed and maintain their own frog colonies, a costly and time-consuming task that limits who can use the animals. The EXRC removes that barrier, letting occasional users access frogs without housing them permanently. If renewed, the centre will expand its offerings to include inbred frog strains, transgenic lines with fluorescent markers, and molecular tools such as BAC clones and egg extracts. This makes Xenopus research more efficient and cost-effective, and reduces the total number of animals needed—a direct contribution to the 3Rs (Replacement, Reduction, Refinement). The work is primarily infrastructure for fundamental biology, not a product or therapy. But past Xenopus research has illuminated how cells divide, how genes are switched on and off, and how embryos build a body—knowledge that underpins cancer biology, developmental disorders, and regenerative medicine.