TY - RPRT TI - Use of amphiphilic spin labels and whole cell isoelectric focusing to assay charge characteristics of sperm surfaces. AU - R H Hammerstedt AU - A D Keith AU - R C Boltz AU - P W Todd PY - 1979 DO - 10.1016/0003-9861(79)90652-0 UR - https://pubmed.ncbi.nlm.nih.gov/36045/ ID - 36045 ER -