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How does Mycobacterium ulcerans evade the immune system?
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- How does the immune system fights tetanus?A 30-year-old teacher, who recently returned from a hiking trip, visits the clinic with a rash, fever, and joint pain. The rash is circular and has a bull's-eye appearance. She recalls a tick bite during her trip. Options: A) Lyme disease B) Eczema C) Psoriasis D) CellulitisWhat is the characteristic lesion of erythema multiforme?
- What is meant by complement fixation? What are cytolysins?All the following would be of benefit to extracellular pathogens, except A) O the presence of a capsule B) O ability to prevent the fusion of a phagosome and lysosome C) O ability to prevent of opsonization D) O ability to alter cell surface proteins via phase variation E) O There are no exceptions; all are of benefit to extracellular pathogens.Which stage of HIV infection does the immune system function most closely to normal? A) Attachment B) Asymptomatic C) AIDS D) Symptomatic E) Acute
- Why is infection by herpesvirus permanent?Why do mycoplasmas need to have stronger cytoplasmicmembranes than other bacteria?4) A patient has their spleen removed due to an accident. How will this affect the immune response? 5) You come in contact with staphylococci through a cut. What cellular features will the immune cells recognize? 6) Name two opsonins and how do these molecules help the immune response? 7) Fever is part of the inflammatory process. What is the role of fever during an immune response? 8) This chemical is used to induce anti-viral responses in cells to protect the cells from viral infections. 9) This complement activation pathway is activated when complement binds to an antibody bound to antigens.