ABSTRACT Objective: To study the localization and quantification of laminin (LN) and laminin receptor (LN?R) in the human placental villi during early, middle and term pregnancy.

• 目的：研究层粘连蛋白（laminin，LN）及其受体（lamininreceptor，LN?R）在早、中、晚期人胎盘绒毛的定位及其相对含量变化。