PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 27233214-7 2016 In contrast to RPMI1640, X-Vivo15 resulted in a significant down-regulation of the cell-surface-located ectonucleotidases CD39 (Ecto-Apyrase) and CD73 (Ecto-5"-Nucleotidase), critical for the extracellular nucleotides-hydrolysis to nucleosides, explaining the loss of inhibition mediated by dGTP and GTP, but not Guanosine. deoxyguanosine triphosphate 291-295 5'-nucleotidase ecto Homo sapiens 152-172