Cytoxic necrotizing factor 1 gene (CNF1) detected in E. coli isolated from a kitten lung By Cheryl Maguire, DVM A one-month-old, Ragdoll kitten was presented for necropsy at the Texas A&M Veterinary Medical Diagnostic Laboratory (TVMDL) in … [Read more...] about Cytoxic necrotizing factor 1 gene (CNF1) detected in E. coli isolated from a kitten lung