TY - RPRT TI - Functional cooperativity between protein molecules bound at two distinct sequence elements of the immunoglobulin heavy-chain promoter. AU - L Poellinger AU - B K Yoza AU - R G Roeder PY - 1989 DO - 10.1038/337573a0 UR - https://pubmed.ncbi.nlm.nih.gov/2492641/ ID - 2492641 ER -