Table 3. Repositories holding cre-bearing mice (as live or cryopreserved embryos or sperm) As of April 24, 2012.

Repository	No. of cre Strains	URL
IMSR (International Mouse Strain Resource), catalog of all holdings*	791	www.findmice.org
APB (Australian Phenomics Bank, Australia)	4	pb.apf.edu.au/phenbank
CMMR (Canadian Mouse Mutant Resource, Canada)	1	www.cmmr.ca
EMMA (European Mouse Mutant Archive, Italy)	75	www.emmanet.org
Harwell (Mammalian Genetics Unit, U.K.)	11	www.har.mrc.ac.uk
JAX (The Jackson Laboratory, U.S.A.)	368	cre.jax.org/data.html
MMRRC (Mouse Mutant Regional Resource Centers, U.S.A.)	242	www.mmrrc.org
MUGEN (Mutant Mouse Models of Human immunological Disease Network, Greece)	13	www.mugen-noe.org
NCIMR (National Cancer Institute Mutant Resource, U.S.A.)	7	mouse.ncifcrf.gov
RBRC (RIKEN Biology Resource Center, Japan)	68	www.brc.riken.jp/lab/animal/en
RMRC-NLAC (National Applied Research Laboratories, Taiwan, R.O.C.)	2	www.nlac.org.tw/RMRC/en1/page/01_aboutrmrc/01/rmrc.html

^*The IMSR is a global catalog of available mouse resource. It contains records for 791 cre lines distributed across many repositories in many countries. Note that other repositories also participate in the IMSR, but many hold no cre lines, and thus do not appear on this list.