This macrophage, which has phagocytized and displayed the antigen on its surface, is acting as a(n):

A. lymphocyte clone
B. antigen-presenting cell
C. plasma cell
D. memory cell


Ans: B. antigen-presenting cell

Biology & Microbiology

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K. denitrificans, which is nonhemolytic and tends to pit the agar, also grows on selective media that support the growth of which gram-negative diplococci?

a. Capnocytophaga spp. b. C. hominis c. A. aphrophilus d. N. gonorrhoeae

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Variation

What will be an ideal response?

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An example of an anion is K+

__________________ Indicate whether the statement is true or false.

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