Explain how mycobacteria avoid immune recognition by T cells during infection
What will be an ideal response?
Both the MHC class I and MHC class II pathways are subverted by mycobacteria during intracellular growth and replication. Although mycobacteria are obligate intracellular pathogens their proteins do not enter the cytosol, so proteasomes are unable to generate mycobacteria-derived peptides for the MHC class I pathway. Mycobacteria are also resistant to degradation by lysosomal enzymes because they inhibit phagolysosome formation. This interferes with the MHC class II pathway.
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A) nodule B) wheal C) cyst D) papule
Drug habituation refers to ___________.
a. the use of a drug for other than therapeutic purposes b. tolerance, psychological dependence, physical dependence, and withdrawal reaction with physiological effects c. psychological dependence d. a problem with the moral character
One of the primary causes of injuries related to aerobics and other types of dance exercise is improper shoes
Indicate whether the statement is true or false
Diastolic blood pressure increases in direct proportion to increased exercise intensity.
a. true b. false