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The permanganate-bisulfite-toluidine blue reaction is a highly selective and sensitive method for demonstrating elastic fibers under polarizing optics. The induced birefringence demonstrates the highly ordered molecular structure of the elastin molecules in the elastic fiber. This is not readily apparent under normal optics.
Elastic fiber in the body is a mixture of amorphous elastin and fibrous fibrillin. Both components are primarily made of smaller amino acids such as glycine, valine, alanine, and proline. [11] [14] The total elastin ranges from 58 to 75% of the weight of the dry defatted artery in normal canine arteries. [15]
Elastic material used in the fabrics of a summer cycling attire comprising a jersey, bib shorts and gloves. Spandex, Lycra, or elastane is a synthetic fiber known for its exceptional elasticity. It is a polyether-polyurea copolymer that was invented in 1958 by chemist Joseph Shivers at DuPont. [1] [2] [3] Yarn of colourless to white Spandex fibers
Verhoeff's stain forms a variety of cationic, anionic and non-ionic bonds with elastin, the main constituent of elastic fiber tissue. [2] Elastin has a strong affinity for the iron-hematoxylin complex formed by the reagents in the stain and will hence retain dye longer than other tissue elements .
The fact that these structures resemble the fibrillar component of elastic fibers must be emphasized. [3] The oxytalan system's histological appearance is distinguished by fiber ramifications and anastomoses. [4] The periodontal membranes of all human teeth, as well as those of monkeys, rats, guinea pigs, and mice, contain oxytalan fibers. [5] [6]
When compared weight-for-weight, spider silk has a higher tensile strength than steel yet is almost as elastic as rubber. Leading manmade fibers such as nylon are less than half as tough.
Textile fibres or textile fibers (see spelling differences) can be created from many natural sources (animal hair or fur, cocoons as with silk worm cocoons), as well as semisynthetic methods that use naturally occurring polymers, and synthetic methods that use polymer-based materials, and even minerals such as metals to make foils and wires.
Lots of veggies give this soup plenty of fiber, upping the satisfaction factor while keeping calories low. Vibrant turmeric adds a golden color to the flavorful broth, while cumin and ginger give ...
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