Neutrophis are not able to present antigens to CD4 T celis even though they are phagorytic bncause Oa they can only present antigens to natural killer celis. Ob. they work for the innate defenses Oc thiey lack MHC I complexes Od. they lack MCH II compiexes

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O Pertussis O Mumps O Impetigo O All of the above Question 17 0. The cause of Rocky Mountain Spotted Fever is O Rickettsia rickettsii O Clostridium perfringens O Ebola virus O Noroviruses O West Nile virus Question 18 0.38 pts

CHA S 22. A 28-year-old woman comes to the physician because of recurrent episodes of dry, itchy patches on her scaip, elbows, and knees during the past 6 months. Prazalendo s scaly, erythematous lesions on the scalp and extremities. A biopsy specimen of a lesion shows hyperkeratosis and acanthoss with untom elongation and lusion of wou Sea diagnosed with a condition caused by accelerated rates of epidermal cell proliferation. These dividing cells are most likely found in which of the blowing huge a A) Stratum basale B) Stratum corneum OC) Stratum granulosum D) Stratum lucidum OE) Stratum spinosum 9

Moniliasis is one of themost common opportunisticdiseases in AIDS. What is theetiological agent of moniliasisand what is the other name ofthe disease? Why is moniliaalso common in healthynewborns?

Why must precautions be taken in Loa loa endemic areas if ivermectin is to be used for RiverBlindness and Lymphatic Filariasis prevention programs? Briefly explain

APCs travel to the lymph nodes via the lymph vessels, to present the infection to the 5. & 6. cells?

Why is the AIDS treatmentoften done with a drugcocktail?

|O Streptomyces. O Penicillium. QUESTION 39 Sulfonamides O block peptidases that cross-link glycan molecules. O interfere with elongation of peptidoglycan. attach to the 30S ribosomal subunit and disrupt protein synthesis. are metabolic analogs of PABA and block folic acid synthesis. O damage cell membranes. QUESTION 40 Antigen presented within Type I MHC molecules will activate T O CD4*; CD8* +. O helper, cytotoxic O cytotoxic; helper O regulatory; cytotoxic QUESTION 41 When a presented antigen fragment interacts with the T cell receptor of a h Click Save and Submit to save and submit. Click Save All Answers to save all ans

12. Describe the four key characteristics of adaptive immunity 13 What hannens to newly.created R and T celle with antigen recentors that hannen to