The "adenosine cycle" is not a significant route of purine metabolism im mammalian cells.
D000241:Adenosine / Q000378:metabolism*; D000818:Animals; D002286:Carcinoma, Ehrlich Tumor / Q000378:metabolism; D002460:Cell Line; D006801:Humans; D008214:Lymphocytes / Q000378:metabolism; D051379:Mice; D011687:Purines / Q000378:metabolism*
D011687:Purines; D000241:Adenosine