慢性肝炎通过活动程度(坏死与炎症)分级，通过纤维化程度分期。
The extent of chronic hepatitis can be graded by the degree of activity (necrosis and inflammation) and staged by the degree of fibrosis.
超声分级级别越高，血清肝纤维化4项指标含量越高。
The more advanced the ultrasonic scales of liver fibrosis, the higher level the 4 serum indicators.
方法：体外培养大鼠皮肤成纤维细胞，以MTT法及琼脂覆盖法评价立方液晶对大鼠皮肤成纤维细胞的细胞毒性分级情况。
Methods: In vitro cultured rat skin flbroblast cells, MTT assay and agar overlay were used to evaluate toxicity grading of GMO on skin flbroblast cells.
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