The epidermal basement membrane is a composite of separate laminin- or collagen IV-containing networks connected by aggregated perlecan, but not by nidogens

表皮基底膜是由单独的层粘连蛋白或胶原蛋白 IV 组成的网络，这些网络通过聚集的基底膜蛋白聚糖连接，但不通过巢蛋白连接