Plasma Enzymes Erythropoiesis and R.E.S. Function in Mice Following Infection with an LDH Agent.

Abstract
Summary 1. Evidence is presented that red blood cells are not the source of additional LDH in plasma following infection of mice with LDH agent from CD/5 lymphoma. Of 9 enzymes tested, only 1 (LDH) responded to LDH agent with a significant rise in plasma level. 2. Plasma levels of LDH, MDH, SODH and GOT fell rapidly in first 24 hours following infection. At 29 hours LDH enzyme increased to a final value 5-10 times normal. Other enzymes returned slowly to normal pre-infection levels. 3. Hematocrit levels were slightly lower in infected mice, but erythropoiesis itself was not directly affected by LDH agent. 4. Half-life of circulating plasma carbon particles was about 30 minutes in both normal and infected mice. LDH agent from CD/5 lymphoma thus differs from R.E.S. stimulating agent of sarcoma 180.

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