New aspects of brain tumor research.
D000478:Alkylation; D000818:Animals; D001932:Brain Neoplasms / Q000139:chemically induced / Q000145:classification / Q000628:therapy; D004247:DNA; D006801:Humans; D008745:Methylation; D009368:Neoplasm Transplantation; D009374:Neoplasms, Experimental; D009607:Nitrosourea Compounds / Q000494:pharmacology
D009607:Nitrosourea Compounds; D004247:DNA