@misc{indiciae2a1e3f470333, title = {Disappearance of anionic sites from the surface of the rat endometrial epithelium at the time of blastocyst implantation.}, author = {K Hewitt and A E Beer and F Grinnell}, year = {1979}, doi = {10.1095/biolreprod21.3.691}, url = {https://pubmed.ncbi.nlm.nih.gov/40627/}, note = {Source identifier: 40627} }