The Nocardia fraction NLD-RB1040 (Nocardia Lysozyme Digest) induced cytostatic activity in vitro against the YAC-1 tumor-cell line, in resident murine peritoneal macrophages isolated from BALB/c mice. The induction of antitumor activity by the Nocardia fraction was not correlated with induced changes in production of TNF alpha, PGE2 or nitrite by human peritoneal macrophages collected from renal patients on Continuous Ambulatory Peritoneal Dialysis (CAPD), or changes in production of TNF a by murine macrophages.
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