PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 9692727-2 1998 Receptors that may be activated by purine nucleotides, P2 receptors, are known to be expressed by astrocytes from dorsal spinal cord; these astrocytes express two distinct subtypes of P2 receptor, P2Y and P2U. Purine Nucleotides 35-53 purinergic receptor P2Y1 Rattus norvegicus 184-200