Four cows bearing large Ocular Squamous Cell Carcinomas (BOSCC) were t
reated by 10 intratumoral injections (Monday-Friday for 2 consecutive
weeks) of 200,000 U Interleukin-2 (Cetus). Tumors regressed in 2 out o
f 4 cases. This result shows that even large tumors may regress after
local IL-2 treatment.