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Deletion of Cnr1 and Cnr2 does not affect vascular structure and leukocyte infiltration. Blood vessels in implantation sites on day 5 of pregnancy are marked by endothelial marker PECAM. Leukocytes are highlighted by CD45, which is expressed on all leukocytes. *Positions of embryos. ge, glandular epithelium; le, luminal epithelium; myo, myometrium; s, stroma.
