Purification, identification and elimination of a natural human serum antibody with cytotoxic effect on guinea pig thymocytes.


Normal human sera contain one or several factors cytotoxic for normal guinea pig thymocytes, and when serum is precipitated with ammonium sulphate (60% saturated) and the precipitate dissolved and dialyzed, the activity is preserved. Gel chromatography with Sephadex G-150 and Sepharose CL-6B indicated a molecular weight of approximately 900,000 daltons. The… (More)


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