BioStratum: The extracellular layer

Just when it seems that every nook and cranny of the human body has been targeted, scientific advances make it possible to tackle a heretofore unapproachable field. The basal lamina, or basement membrane, is a protein matrix composed of type IV collagen and laminin that forms a thin, sheet-like extracellular layer throughout the body. The basal lamina has been a difficult target to study because of the insoluble nature and structural complexity of its protein components

Yet the

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