Model Description: A iCre-polyA expression cassette was knocked into the Il17a gene start codon site. This gene encodes a pro-inflammatory cytokine that is a member of the interleukin-17 family. When crossed with a strain carrying a gene flanked by loxP sites, the flanked gene will be removed in cells expressing cre. This strain may be useful for studying autoimmune inflammatory diseases such as rheumatoid arthritis, psoriasis and multiple sclerosis.