When were transfer factors discovered?

What are transfer factors?

In 1949, Dr. H. Sherwood Lawrence, a New York University immunologist, determined that an immune system response could be transferred from a donor to a recipient through a white blood cell extract. He concluded that these extracts contained a “factor” capable of transferring the donor’s immunity information to the recipient. Dr. Lawrence subsequently coined the term “transfer factor.”

In 1998, 4Life Founders David and Bianca Lisonbee licensed the patent to extract transfer factors from cow colostrum. The introduction of 4Life Transfer Factor® Classic opened the door to new immune system support products. 4Life’s commitment to transfer factor research has progressively raised the standard for modern-day immune system supplementation.*
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