Objective:To study the effect of different concentration of serum on proliferation of the ductal cells of submandibular gland(SMG) cultured in vitro.是什么意思_Objective:To study the effect of different concentration of serum on proliferation of the ductal cells of submandibular gland(SMG) cultured in vitro.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句