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Pili multigemini, also known as "compound hairs," [2] is a malformation characterized by the presence of bifurcated or multiple divided hair matrices and papillae, giving rise to the formation of multiple hair shafts within the individual follicles.
Uncombable hair syndrome 3 is caused by a defect in the PADI3 gene (peptidylarginine-deiminase 3) and is located on chromosome 1. This defect apparently is the most common cause of UHS. [4] The PADI3 gene provides instructions for creating an enzyme called peptidylargine deiminase 3.
The first prerequisite is the presence of a sequence that can fold back on itself to form a paired double helix. The stability of this helix is determined by its length, the number of mismatches or bulges it contains (a small number are tolerable, especially in a long helix), and the base composition of the paired region.
Metformin itself isn’t thought to cause hair loss, but type 2 diabetes and PCOS (polycystic ovary syndrome) — the conditions it’s prescribed to treat — can cause hair loss.
Linkage analysis and chromosomal rearrangement revealed the cause of SCS to be mutations in the TWIST gene (twist transcription factor gene) located on chromosome 7p21. The TWIST gene encodes a basic helix-loop-helix (b-HLH) transcription factor that controls head mesenchyme development as the cranial tube forms. More than 35 varying TWIST ...
The shape of the hair follicle determines the hair's curliness. An individual hair's shape is never completely circular. The cross-section of a hair is an ellipse, which can tend towards a circle or be distinctly flattened. East Asians heads of straight hair are formed from almost-round hair follicles producing straight hair, and European hair ...
The hair follicle is an organ found in mammalian skin. [1] It resides in the dermal layer of the skin and is made up of 20 different cell types, each with distinct functions.. The hair follicle regulates hair growth via a complex interaction between hormones, neuropeptides, and immune cells
Stargazers should prepare to lose sleep on Tuesday, Aug. 12, as two celestial sights unfold. The first event will be visible before sunrise and will feature the two brightest planets in the sky ...