Rabbits’ fur

Rabbits Fur. The more slender hairs of the rabbit (Lepus cuniculus) exhibit a characteristic appearance, owing especially to the medullary layer which presents the appearance of a succession of small, pigmented rectangles, separated by empty spaces of about the same dimensions. In the larger hairs, the medullary stratum may be composed of two or more series of cells arranged as just described. The scales, although thin, are plainly evident, but the mean fibrillary layer is scarcely visible. 

Discontinued applications. The use of phenylmercuric acetate as a fungicide in interior latex paints was banned in 1990 (Reese 1990), and its use in exterior paint was banned in 1991 (Hefflin et al. 1993). Both of these bans were prompted because of releases of mercury vapors as the paint degraded. Alkyl mercurial compounds were used until the mid-1970s as a treatment to disinfect grain seeds. Most other agricultural applications of mercury compounds in bactericides and fungicides have been banned due to the toxicity of mercury. Mercuric nitrate was used in the production of felt hats to hydrolyze rabbit fur. The use of mercury as a wood preservative has ceased due to the use of polyurethane (Drake 1981). 

Finally, depending on the species from which the wool is taken, a medulla -a hollow, air-filled cavity - may be present at the centre of the fibre. This feature is generally found only in coarser fibres, and may take a number of different forms, ranging from a continuous unbroken channel (e.g. many sheep s wool fibres) to interrupted, lattice-like structures (e.g. rabbit fur). 

Flaving determined that a fiber is either of animal or vegetable origin, examination imder a 10-20 x microscope is often sufficient to identify it. If, for example, one has an animal fibeq comparison of the specimen with a known, previously moimted standard allows one to readily differentiate the various fur and hair fibers. Wool is easily distinguished from camel hair or rabbit fur by the types of scales and size of medulla. Further comparison with samples taken from different breeds of sheep will yield a more exact... 

Isolation procedures employed for the preparation of L-amino acids vary with the amino acid and the starting material. The proportions of amino acids in gelatin, blood, wheat protein, casein, silk, com protein, plant sprouts, human hair, rabbit fur, fish protein and other materials commonly used for this purpose differ so markedly and the solubility relations of the amino acids in the hydrolysates of these products vary so widely that the development of satisfactory isolation procedures has been a special problem for each amino acid and for each protein. 

Human hands Asbestos Rabbit fur Glass Mica... 

Lewis Carroll s fictional Mad Hatter could well have been based upon some real people. In those days the felt used for hatmaking was made from rabbit, hare, or beaver fur, which the hatter would mat by treating it with hot mercuric nitrate. Erratic behavior, along with swollen gums and tremors, became the recognized consequences of hatting. 

The remaining fur fiber is then sheared with revolving blades to a velvety texture. Nutria, some rabbit, and muskrat may also be sheared to imitate seal. Pointing , a process of gluing either badger or monkey guard hair into furs, adds... 

For the acute dermal irritation/corrosion study, the albino rabbit is considered as the preferred species, although several mammalian species may be used. At least three healthy adult animals should be used. Additional animals may be required to clarify equivocal responses. All experimental animals should be individually caged. Feeding and maintenance of animals should be uniform as described for acute oral toxicity. Approximately 24 hours before the test, the fur from the dorsal area of the trunk should be clipped or shaved. Care should be taken to avoid abrading the skin. Only animals with healthy, intact skin should be used for the study. 

No studies were found that examined excretion in humans after dermal exposure to hydrogen sulfide. One study conducted in rabbits provides evidence of excretion of hydrogen sulfide after dermal exposure (Laug and Draize 1942). The fur on the trunk of the animals was clipped, left intact, or abraded and then the animals were exposed to hydrogen sulfide (concentration not reported) for 1.5-2 h. The animals were then exposed to clean air. Expired air from the animals reacted with lead acetate paper, indicating the presence of sulfide (Laug and Draize 1942). 

Efficacy of the M291 kit has been evaluated in a number of animal models for OP poisoning (D049 Technical Report, 1987). In an early report, rabbit skin was shaved (to mimic human skin without fur) and then the skin exposed to... 

Haytliurii s next experiment ctjnsi ted in subjecting rabbits and guinea pigs to the fumes of heated TNT fur several hours a day for over a month. In this way the animals were under the same conditions as men in the plants who are forced to breathe fumes from washing or crystallizing appara.tus, or from any source where the TNT is subjected to heat. The animals used in this test showed no Webster reaction. 

Wild rabbits and hares of all species are a favorite class of small game hunted by many people for the pot and as sport. These animals are rather fecund and their populations can be quite productive, and they can therefore be harvested in large numbers. Millions of these animals are shot and snared each year in North America. They are mostly hunted for their meat, because the skins of these animals are fragile and tear easily, and therefore the fur has little commercial value. 

Because of selective breeding, domestic rabbits are now available in a wide range of genetically based varieties, which differ in size, shape, color, length of fur, and other characteristics. Many domestic rabbits are raised specifically for food, others are used as laboratory animals, and many others are kept as pets. 

The domestic rabbit Oryctolagus cuniculus) has been derived from the old-world or European rabbit. The domestic rabbit is mostly raised as a source of meat, and for its fur, although the latter is of relatively poor quality. 

The presence of atropinesterase in rabbits is inherited through an incompletely dominant gene (84). This gene is associated with another gene that influences the color of the fur, causing "extension of black pigment in the fur."... 

Wool and hair fibres can be taken from a wide range of animal species such as sheep, goats, camels, yak, musk ox, llamas and related species, and fur animals (rabbits, foxes, beavers and the like), among others. The properties of these fibres are dictated by the source, and these variations can influence length, diameter and fineness, mechanical characteristics and durability, colour and dyeability. 

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