TY - RPRT TI - Disappearance of anionic sites from the surface of the rat endometrial epithelium at the time of blastocyst implantation. AU - K Hewitt AU - A E Beer AU - F Grinnell PY - 1979 DO - 10.1095/biolreprod21.3.691 UR - https://pubmed.ncbi.nlm.nih.gov/40627/ ID - 40627 ER -