Administration of 50 to 100 IU/ml of IL-2 to the effector PBL at the start of the assay increased the cytotoxic activity against primary cervical cancer cell lines overexpressing TF compared with the use of hI-con1 alone (Figure 4, p = 0.025) whereas no significant increase in cytotoxicity was detected after 5 hours of IL-2 treatment in the absence of hI-con1 or in the presence of rituximab control mAb (Figure 4). Here, IL2 is linked to cervical carcinoma.