The basal lamina, made up of the lamina densa and the lamina lucida. In cases where to layers of epithelium abut one another, the basal lamina is referred to as a basement membrane.

The basement membrane
basement membrane

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The term "basal lamina" is usually used with electron microscopy, while the term "basement membrane" is usually used with light microscopy. The structure known as the basement membrane in light microscopy refers to the stained structure anchoring an epithelial layer. This encompasses the basal lamina secreted by epithelial cells and typically a reticular lamina secreted by other cells.

Hepatocytes and endothelia (eptihelium lining vessels)