Example showing a portion of the MGI web display of the phenotype annotations for homozygotes for the Ccm1tm1Dmargenetically engineered allele (the first targeted mutation from the Douglas Marchuk laboratory in the cerebral cavernous malformations 1 gene). Homozygotes are embryonic lethal, showing developmental and cardiac abnormalities. Note the organization of annotations under the high level phenotype categories and the link to OMIM where the mouse and human show similar phenotypic characteristics. See  to view the complete record for the Ccm1tm1Dmarphenotypic allele. Searches for phenotypes at MGI can be done via the Alleles and Phenotypes Query Form .