title: [Influence of age at start of the treatment on induction of F344 rat thymic lymphoma by N-propyl-N-nitrosourea (PNU)].
mesh_terms: D000367:Age Factors; D000818:Animals; D001835:Body Weight; D005260:Female; D008223:Lymphoma / Q000139:chemically induced*; D009607:Nitrosourea Compounds / Q000008:administration & dosage / Q000633:toxicity*; D051381:Rats; D011916:Rats, Inbred F344; D013953:Thymus Neoplasms / Q000139:chemically induced*
chemical_list: D009607:Nitrosourea Compounds; C020796:propylnitrosourea