IL2 and cancer: The model takes into account both the humoral and cellular response of the immune system and the recognition process that involves the following entities: vaccine cells (VC), cancer cells (CC), tumor associated antigens (TAA), Plasma B cells (B), thymus cytotoxic lymphocytes (TC), thymus helper (TH) lymphocytes, antibodies (AB), interleukins 2 and 12 (IL2 and IL12), and antigen presenting cells (APC).