Repository of mouse vectors, ES cells, mice, embryos, and sperm generated by the NIH KOMP Mutagenesis Project. In addition, the KOMP Repository offers services in support of the KOMP products, including ES cell microinjection, vector cloning, post-insertional modification of cloned ES cells, cryopreservation, assisted reproduction techniques (IVF, ICSI) and mouse breeding, pathology (clinical and anatomical) pathology services, phenotyping services, etc. The KOMP Repository is the final component of a more than $50 million trans-NIH initiative to increase the availability of genetically altered mice and related materials. The University of California, Davis (UC Davis) and Children''s Hospital Oakland Research Institute (CHORI) in Oakland, Calif., are collaborating to preserve, protect, and make available about 8,500 types of knockout mice and related products available to the research community. The products are generated by two KOMP mutagenesis teams (the CSD consortium and Regeneron Inc). All KOMP products generated by the CSD consortium and Regeneron are available through the KOMP Repository.