transfer factor

noun

Immunology.

1. 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.

Word History and Origins

Origin of transfer factor¹

First recorded in 1955–60

Example Sentences

They had ample cause for celebration: their ten months of experiments on a "transfer factor" in animal immunology had produced spectacular results, gaining publication in scientific journals and the attention of immunologists round the world.

Read more on Time Magazine Archive

Most important, serious doubt had been cast on the validity of the transfer factor experiments.

Read more on Time Magazine Archive

Says he: "I think it's best to conclude that the transfer factor doesn't exist."

Read more on Time Magazine Archive