Ocular squamous cell carcinoma: immunological responses to tumour tissue and phytomitogens.

Cows with histologically confirmed ocular squamous cell carcinoma were injected with autochthonous tumour brei in adjuvant. Lymphoproliferative responses of isolated peripheral blood lymphocytes exposed to phytomitogens and inhibition of cell migration indicated that afflicted animals were immunocompetent. Similar but lesser responses were evident when autochthonous tumour homogenates were used to stimulate lymphocytes.