Systemic immune responses in Cytauxzoon felis-infected domestic cats.

Objective: To characterize systemic immune responses in Cytauxzoon felis-infected cats.

Sample: Blood and lung samples obtained from 27 cats.

Procedures: Cats were allocated into 4 groups: cats that died of cytauxzoonosis, acutely ill C felis-infected cats, healthy survivors of C felis infection, and healthy uninfected cats.