Lymphatic SystemSpecific Defenses |
What naturally occurring substance provides protection against viral infections? |
Interferons protect the adjacent cells against viral penetration. Interferons are glycoproteins produced by body cells upon exposure to a virus. In 1957 Alick Isaacs (1921–1967) and Jean Lindenmann (1924-) identified a group of over 20 substances that were later designated as alpha, beta, and gamma interferons.