PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 15914318-2 2005 There have been recognized four receptors for PGE2 (EP1-EP4 receptor) so far, and EP2 and EP4 receptors are mainly involved in the immunosuppressive effect of PGE2 in vitro. Dinoprostone 159-163 prostaglandin E receptor 2 Rattus norvegicus 82-85 15914318-12 2005 CONCLUSIONS: The effect of PGE2 to prolong the survival of skin transplant requires the action of a combination of three receptors, i.e., EP2+EP3+EP4. Dinoprostone 27-31 prostaglandin E receptor 2 Rattus norvegicus 138-141