lamina densa

Basal lamina (part of which is also known as Lamina densa)

However, unlike the lamina densa, the electron-dense zone adjacent to enamel show no signs of hemidesmosomes.

The lamina densa is the central layer consisting of type IV collagen and laminin.

This is transitional tissue composed of two zones, the lamina lucida and lamina densa.

The lamina densa has a greater density of filaments and is adjacent to the lamina propria.

Ideally, the basement membrane must contain a lamina lucida and a lamina densa.

The final layer is the lamina densa which is a darker central zone of the basal lamina.

Progression of the disease leads to basement membrane thickening and gives a "basket-weave" appearance from splitting of the lamina densa.

Anchoring filaments traverse the lamina lucida space and appear to insert into the electron dense zone, the lamina densa.

Beneath the lamina densa, loop-structured, cross-banded anchoring fibrils extend more than 300 nm beneath the basement membrane within the papillary dermis.

It is a roughly 40 nanometre wide electron-lucent zone between the plasma membrane of the basal cells and the (electron-dense) lamina densa of the basement membrane.

The structure of the epithelial basal lamina was also appeared close to normal: lamina densa and lamina lucida were well distinguishable with rare branching and duplication.

The basal lamina is composed of 3 layers: lamina rara externa, lamina densa, and lamina rara interna.

The clear layer closer to the epithelium is called the lamina lucida, while the dense layer closer to the connective tissue is called the lamina densa.

Some theorize that the lamina lucida is an artifact created when preparing the tissue, and that the basement membrane is therefore equal to the lamina densa in vivo.

The name is descriptive of the electron-dense changes that transform the middle layer (lamina densa) of the glomerular basement membrane (GBM) in a segmental, discontinuous or diffuse pattern.

The electron-dense lamina densa membrane is about 30-70 nanometers in thickness, and consists of an underlying network of reticular collagen (type IV) fibrils which average 30 nanometers in diameter and 0.1-2 micrometers in thickness.