For each of the following descriptions in questions 1-4, select the Fc receptor (A-G) that best matches it
A. Fc?RI (CD64)
B. Fc?RIIB (CD32)
C. Fc?RIIIA (CD16)
D. Fc?RI
E. Fc?RII (CD23)
F. Fc?R (CD89)
G. FcRn
Ig receptor on B cells that mediates feedback inhibition
ANS: B. FcγRIIB (CD32) is a low-affinity IgG receptor expressed on B lymphocytes. When antigen-IgG complexes simultaneously bind to membrane Ig and to FcγRIIB, phosphatases activated by FcγRIIB block activating signals from the B cell antigen receptor complex.
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Answer the following statement true (T) or false (F)
A nephroma is a(n) ________ of the kidney
A) tumor B) infection C) disease D) cyst
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A. heavy B. normal C. light D. difficult
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A) painful gastrointestinal bleeding. B) painless gastrointestinal bleeding. C) high fever and flushed appearance. D) a dry, hacking cough.