| NRC | National Research Council; National Response Center; normal retinal correspondence; not routine care... |
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| PRKAR | protein kinase, cyclic adenosine monophosphate-dependent, regulatory |
| PRKAR1A | protein kinase, cyclic adenosine monophosphate-dependent, regulatory, type 1 alpha |
| RH | radiant heat; radiation hybrid; radiological health; reactive hyperemia; recurrent herpes; regulator... |
| RP | radial pulse; radiopharmaceutical; rapid processing [of film]; Raynaud phenomenon; reactive protein;... |
| regulatory sequences, nucleic acid | DNA sequences involved in regulating the expression of other genes. (12 Dec 1998) |
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| regulatory T-cell | <immunology> Vague term for any class of T lymphocyte not directly involved in the effector side of immunity, but involved in controlling responses and actions of other cells, especially T helper and T suppressor cells. (18 Nov 1997) |
| myogenic regulatory factors | A family of muscle-specific transcription factors which bind to DNA in control regions and thus regulate myogenesis. All members of this family contain a conserved helix-loop-helix motif which is homologous to the myc family proteins. These factors are only found in skeletal muscle. Members include the myod protein (myod protein), myogenin, myf-5, and myf-6 (also called mrf4 or herculin). (12 Dec 1998) |
| public utility regulatory policies act | (PURPA) A federal law requiring a utility to buy the power produced by a qualifying facility at a price equal to that which the utility would otherwise pay if it were to build its own power plant or buy power from another source. (05 Dec 1998) |
| sequence, regulatory | A sequence of bases in DNA that controls the expression of a gene. (12 Dec 1998) |