Light absorption value (A value) in bFGF-treated control groups was higher than that of the blank group and reached to the peak in cells treated with ~10 ng/ml of bFGF; with no further increase in cells treated with higher levels of bFGF.

• 对照组比较空白组,全部bFGF组A值都增加,最大A值为bFGF的10ng/ml浓度组;