最常见的恶性原发性骨肿瘤是骨肉瘤。
The most common malignant primary bone tumors are osteosarcomas.
方法：采用MTT法体外药敏试验检测30例骨肉瘤患者外周血淋巴细胞和其肿瘤细胞对14种化疗药物的敏感性。
Methods: the sensitivity of14kinds of anticarcinogen in the peripheral blood lymphocytes and the tumor cells of30cases with osteosarcoma in vitro were tested by the MTT method.
骨肉瘤是原发于骨的肿瘤中最常见的一类恶性肿瘤，转移快，死亡率高。
Osteosarcoma is one of the commonest primary malignant tumors of bone. It metastasizes fast, and has a high death rate.
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