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建立了急性淋巴细胞型白血病（ＡＬＬ）细胞体外半固体培养体系，对１２例ＡＬＬ细胞进行了体外培养观察，同时对ＡＬＬ细胞集落形成的因素进行了研究。
The establishment of the acute lymphoblastic leukemia (ALL) cells in vitro semi-solid culture system, 12 cases of ALL cells were cultured in vitro, at the same time, the factors of ALL cell colony formation were studied.