Theileriosis is a disease of mammals and birds caused by a [[protozoa | '''protozoal''']] pathogen which resides within the [[Lymphocytes - Introduction | lymphocytes]] and [[Macrophages | macrophages]] | Theileriosis is a disease of mammals and birds caused by a [[protozoa | '''protozoal''']] pathogen which resides within the [[Lymphocytes - Introduction | lymphocytes]] and [[Macrophages | macrophages]] |