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