TY - RPRT TI - Proenkephalin A in bone-derived cells. AU - H Rosen AU - R D Polakiewicz AU - S Benzakine AU - Z Bar-Shavit PY - 1991 DO - 10.1073/pnas.88.9.3705 UR - https://pubmed.ncbi.nlm.nih.gov/2023920/ ID - 2023920 ER -