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.

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Origin of transfer factor

First recorded in 1955–60
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

Medical definitions for transfer factor

transfer factor

n.

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