The chemosensitivity of a new experimental model--the M5076 reticulum cell sarcoma.

The M5076 reticulum cell sarcoma is a murine tumour of potential value in experimental chemotherapy. Experiments were conducted to ascertain the growth characteristics and chemosensitivity of this neoplasm in the BDF1 mouse. The intramuscular tumour proved to be responsive to the alkylating agents, nitrosoureas, procarbazine, DTIC and treosulphan, yet insensitive to the antimetabolites and only weakly responsive to adriamycin. Analogues of the antitumour agents hexamethylmelamine and N-methylformamide were tested against this neoplasm. The patterns of activity determined for these analogues against this tumour were identical to those previously reported against other model systems.