Muscle and Cell Motility 219130.DLM is a 32-year-old male homosexual seropositive for HIV. He has
HIV-associated periodontitis and intraoral candidiasis. Peripheral neu-
trophils (PMNs) were isolated from the patient and found to have increased
activity as measured by oxidative burst and F-actin assays compared to
control patients. Which of the following cellular events would most likely
be increased in the peripheral blood PMNs from DLM?
a. Phagocystosis
b. Bidirectional transport of vesicles
c. Fast axoplasmic transport
d. Chromosomal movements
e. Ciliary movement
131.Which of the following is absent in smooth-muscle cells compared to
skeletal muscle cells?
a. Troponin
b. Calmodulin
c. Calcium
d. Myosin light-chain kinase
e. Actin and tropomyosin interactions