TY - RPRT TI - Positive selection induces CD4 promoter and enhancer function. AU - M Adlam AU - D D Duncan AU - D K Ng AU - G Siu PY - 1997 DO - 10.1093/intimm/9.6.877 UR - https://pubmed.ncbi.nlm.nih.gov/9199971/ ID - 9199971 ER -