Chapter 21 The Immune System BB Version

The neutrophils injury injury

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Unformatted text preview: e mobilization Events of phagocyte mobilization Antimicrobial proteins Antimicrobial Interfere with microorganisms ability to Interfere reproduce reproduce Interferon (IFN’’s) for stopping viruses from s) replicating by stopping protein replication in cells. Not virus specific. in Gamma (immune) interferon (lymphocytes) Alpha interferon (other leukocytes) Beta interferon (fibroblasts) Interferons Interferons A family of related proteins, each with a family different physiological effect different Act against malignant cells, reduce Act inflammation in injured areas, activate macrophages and mobilize natural killer cells cells Has antiviral agents Innate defenses Virus Viral nucleic acid 1 Virus Internal defenses New viruses enters cell. 5 Antiviral proteins block viral reproduction. 2 Interferon genes switch on. DNA Nucleus mRNA 4 Interferon 3 Cell produces interferon molecules. Host cell 1 Infected by virus; makes interferon; is killed by virus Interferon Host cell 2 Binds interferon from cell 1; interferon induces synthesis of protective proteins binding stimulates cell to turn on genes for antiviral proteins. Figure 21.5, step 5 Complement Complement Complement system (comple...
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