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云芝糖肽（２５～３５ｍｇ／ｋｇ）能明显促进小鼠骨髓粒－单系祖细胞（ＣＦＵ－ＧＭ）增殖，其作用维持３天；剂量＞５５ｍｇ／ｋｇ时，对ＣＦＵ－ＧＭ增殖无刺激作用。４Ｇｙ射线照射小鼠能明显抑制小鼠ＣＦＵ－ＧＭ增殖；用云芝糖肽（２５ｍｇ／ｋｇ）处理小鼠，贫血小鼠ＣＦＵ－ＧＭ的增殖均显示明显的刺激作用。
The PSK (25～35mg/kg) can obviously promote the proliferation of mouse bone marrow mono-progenitor cells (CFU-GM) for 3 days; at a dose of >55mg/kg, it has no stimulation to CFU-GM proliferation. effect. Irradiation with 4 Gy rays significantly inhibited the proliferation of CFU-GM mice. The mice treated with Yunzhi glycopeptide (25 mg/kg) showed significant stimulatory effects on the proliferation of CFU-GM.