Objective:To study the expression of proliferating cell nuclear antigen(PCNA) and fibronectin(FN) in placenta of early abortion.是什么意思_Objective:To study the expression of proliferating cell nuclear antigen(PCNA) and fibronectin(FN) in placenta of early abortion.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句