title: STRUCTURE OF THE DNA OF BACTERIOPHAGE PHI-X174. V. PURINE SEQUENCES.
mesh_terms: D000818:Animals; D002247:Carbon Isotopes; D002417:Cattle; D002468:Cell Physiological Phenomena; D003090:Coliphages; D004247:DNA; D008660:Metabolism; D011687:Purines; D011743:Pyrimidines; D012106:Research; D013950:Thymus Gland
chemical_list: D002247:Carbon Isotopes; D011687:Purines; D011743:Pyrimidines; D004247:DNA; C030985:purine
keywords: CARBON ISOTOPES; CATTLE; CELL STRUCTURE; COLIPHAGES; DNA; EXPERIMENTAL LAB STUDY; METABOLISM; PURINES; PYRIMIDINES; THYMUS GLAND