with the winn assay , it was found that spleen cells from rats immunized with x-irradiated tumor cells followed by bu inhibited the growth of admixed tumor cells more strongly than did spleen cells from rats only immunized or only bu treated and that the tumor-neutralizing activity of spleen cells from rats treated by immunization followed by bu was abrogated by treatment with anti-t-serum and complement .
C0229671
serum
C0009498
complement