title: Symposium on the experimental pharmacology and clinical use of antimetabolites. IX. The pyrimidine and purine antagonists.
mesh_terms: D000963:Antimetabolites / Q000628:therapy*; D006801:Humans; D011687:Purines / Q000037:antagonists & inhibitors*; D011743:Pyrimidines / Q000037:antagonists & inhibitors*
chemical_list: D000963:Antimetabolites; D011687:Purines; D011743:Pyrimidines; C030986:pyrimidine; C030985:purine
keywords: ANTIMETABOLITES/therapy; PURINES/antagonists; PYRIMIDINES/antagonists