Origin of poly(a)
poly- + adenylic acid
First Known Use: 1957
Medical Definition of poly(A)
: RNA or a segment of RNA that is composed of a polynucleotide chain consisting entirely of adenine-containing nucleotides and that codes for polylysine when functioning as messenger RNA in protein synthesis—called also polyadenylate, polyadenylic acid
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Medical Dictionary: Definition of "poly(A)"
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