Tubules in malignant growths.
D002277:Carcinoma / Q000473:pathology*; D003238:Connective Tissue / Q000473:pathology; D006801:Humans; D009362:Neoplasm Metastasis / Q000473:pathology*; D009369:Neoplasms / Q000473:pathology*; D012509:Sarcoma / Q000473:pathology*