3. INTERTER.ONS:tu lg57 it was demonstrated that oells infected with a virus-produced polypepides calledjnterferons.These interferons prod,rcJ a nonspecific, short acting resistarrce to Yir--al infection. In 1980, humaninterferon g"o", *"r* introduced ioto bu"t"riu -thro"gt a technique called genetic recombination- enablingthe bacteria to act as interferon factories.The three categories of interferons are alpha beta, and gafirma. Almost all cells make alpha and betainterferon. These act as messengers that protect other cells. The viruses are still able to penetrate othercells, but the ability of the virusis to replicate and assemble new virus prticles is inhibited. krticularlymphocytes and natural killer cells produce ganlma interferon'The FDA has approved the use of interferons to treat a number of diseases. Among these arelhe use ofalpha interferon to treat crffonic hepatitis A and B, geniul warts, and Kaposi's sarcom4 and the use ofgi**a interferon to treat chronic granulomatous disease'B) SPECIFIC
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Chronic granulomatous disease, short acting resistarrce, antibody production and991b