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Hair exists in a variety of textures. Three main aspects of hair texture are the curl pattern, volume, and consistency. All mammalian hair is composed of keratin, so the make-up of hair follicles is not the source of varying hair patterns. There are a range of theories pertaining to the curl patterns of hair.
Alpha-keratin, or α-keratin, is a type of keratin found in mammalian vertebrates.This protein is the primary component in hairs, horns, claws, nails and the epidermis layer of the skin. α-keratin is a fibrous structural protein, meaning it is made up of amino acids that form a repeating secondary structure.
KRT81, a type II hair keratin, is a major hair protein expressed in the hair cortex. Interestingly, despite being typically associated with hair structures, KRT81 expression has been observed in the SKBR3 human breast cancer cell line and metastatic lymph nodes of breast carcinomas, but not in normal breast epithelial cells.
The neutral–basic keratins are encoded on chromosome 12 (12q13.13). The acidic keratins are encoded on chromosome 17 (17q21.2). The human genome encodes 54 functional keratin genes, located in two clusters on chromosomes 12 and 17. This suggests that they originated from a series of gene duplications on these chromosomes. [13]
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
Basic Marinade Ingredients All marinades share a few key parts: oil, salt and acid. Oil lets the marinade ingredients stick to the food’s surface while salt helps the meat retain moisture.
Hair-follicle cycling Hair grows at different speeds and different lengths. Its composition causes different colors and textures, which influence how long the hair strands grow. Marianne Ernst, a German "long hair model" The three stages of hair growth are the anagen, catagen, and telogen phases. Each strand of hair on the human body is at its ...
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related to: three basic components of marinades elements are important to human hair