The EXRC supplies oocytes to many UK laboratories regularly and also to some on mainland Europe. This contributes to reducing the number of female Xenopus used for oocyte injection experiments. We have found it best to send oocytes out as dissected ovary lobes on wet ice but can provide defolliculated oocytes if necessary, albeit at extra cost. We prefer to send oocytes on a Monday and Wednesday. If you simply wish to do “one-off” experiments using oocytes then please consider using our “research hotel” service.