In other studies, mice with inoculated lymphoma or mastocytoma treated intraperitoneally with IL-2 achieved a 70–90% CR [29-31], cattle with ocular squamous cell carcinoma treated with peritumoural IL-2 achieved a 69% CR [35], and horses with sarcoid tumours achieved a 14% PR and 43% CR with intratumoural IL-2 [36]. The gene discussed is IL2; the disease is mastocytoma.