TY - RPRT TI - Evidence for stabilizing selection in a eukaryotic enhancer element. AU - M Z Ludwig AU - C Bergman AU - N H Patel AU - M Kreitman PY - 2000 DO - 10.1038/35000615 UR - https://pubmed.ncbi.nlm.nih.gov/10676967/ ID - 10676967 ER -