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transfer factor

noun, Immunology.
a lymphocyte product that, when extracted from T cells of an individual with immunity to a particular antigen, can confer that immunity when administered to another individual of the same species.
Origin of transfer factor
1955-60 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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transfer-factor in Medicine

transfer factor n.

  1. The transfer gene of a conjugative plasmid, especially of the resistance plasmid.

  2. A substance free of nucleic acid and antibody, that is obtained from the white blood cells of a person with a delayed-type sensitivity and will transfer the specific sensitivity to the recipient after injection into the skin of a nonsensitive person.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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