Spontaneous tumors of the thymus in mastomys (Rattus natalensis).
D000818:Animals; D005260:Female; D008113:Liver Neoplasms; D008297:Male; D009362:Neoplasm Metastasis; D051381:Rats; D012376:Rodent Diseases; D013274:Stomach Neoplasms; D013953:Thymus Neoplasms / Q000473:pathology