GENERAL HISTOLOGY

Detailed explanation-1: -Elastin is the main component of elastic fibers, which provide stretch, recoil, and elasticity to the skin.

Detailed explanation-2: -Elastic fibers (or yellow fibers) are an essential component of the extracellular matrix composed of bundles of proteins (elastin) which are produced by a number of different cell types including fibroblasts, endothelial, smooth muscle, and airway epithelial cells.

Detailed explanation-3: -Collagen protein is found in white fibres whereas elastin protein is found in yellow fibres.

Detailed explanation-4: -Among the various histochemical stains, Verhoeff-van Gieson (VVG) is probably the most widely used histochemical stain for the demonstration of elastic fibers1 in pathological conditions such as early lesions of degenerative valvular aortic stenosis, 2 intimal fibrosis, and aortic atherosclerosis.