On the heavy-chain immunoglobulin gene locus, recombination signal sequences flank _______ of the V segment, _______ of the D segment, and _______ of the J segment
a. the 5? side; both sides; the 3? side
b. the 5? side; the 5? side, the 5? side
c. the 3? side; both sides; the 3? side
d. both sides; both sides; both sides
e. the 3? side; both sides; the 5? side.
E
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The oil-producing glands are the
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