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An Ishihara test image as seen by subjects with normal color vision and by those with a variety of color deficiencies. The diagnosis of congenital red–green color blindness is usually inferred through psychophysical testing. These color vision tests test detect the color vision phenotype, and not the subject genotype, so are unable to ...
The Henneke horse body condition scoring system is a numerical scale used to evaluate the amount of fat on a horse's body. It was developed in the early 1980s by Don Henneke at Texas A&M University with the goal of creating a universal scale to assess horses' bodyweight, [ 1 ] and was first published in 1983. [ 2 ]
Animals frequently used for polyclonal antibody production include chickens, goats, guinea pigs, hamsters, horses, mice, rats, and sheep. However, the rabbit is the most commonly used laboratory animal for this purpose. Animal selection should be based upon: the amount of antibody needed,
Atlantic horseshoe crab Limulus polyphemus. Limulus amebocyte lysate (LAL) is an aqueous extract of motile blood cells from the Atlantic horseshoe crab Limulus polyphemus.LAL reacts with bacterial endotoxins such as lipopolysaccharides (LPS), which are components of the bacterial capsule, the outermost membrane of cell envelope of gram-negative bacteria.
References range may vary with age, sex, race, pregnancy, [10] diet, use of prescribed or herbal drugs and stress. Reference ranges often depend on the analytical method used, for reasons such as inaccuracy , lack of standardisation , lack of certified reference material and differing antibody reactivity . [ 11 ]
The test is usually performed using commercially available test kits which detect the reaction of heterophile antibodies in a person's blood sample with horse or cow red blood cell antigens. These test kits work on the principles of latex agglutination or immunochromatography. Using this method, the test can be performed by individuals without ...
Equine drug testing is a form of drug testing applied to performance horses in regulated competition. Most common in racehorses , drug tests are also performed on horses in endurance riding and in international competition such as the Olympics and FEI -sanctioned competition.
Horses in hard training may need a vitamin E supplement, as their requirements are higher than horses in more moderate work. The horse may also be deficient in selenium, and need a feed in supplement. Selenium can be dangerous if overfed, so a blood test to confirm that the horse is in need of supplemental selenium should be used. [1]