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Animal tissue was the first substrate for immunofluorescent detection of antinuclear antibodies and has been in use since the late 1950s. Liver and kidney tissue sections from animals such as rats are used to identify anti-dsDNA antibodies. This substrate has largely been superseded by the use of HEp-2 cells. [1]
[10] On the other hand, they say, although 95% of the patients who actually have lupus test positive for ANA, "Only a small percentage have a negative ANA, and many of those have other antibodies (such as anti-phospholipid antibodies, anti-Ro, anti-SSA) or their ANA converted from positive to negative from steroids, cytotoxic medications, or ...
They can create both false positive and false negative results. [4] So-called "sandwich" immunoassays are particularly susceptible to this interference. (Sandwich immunoassay = two-site, noncompetitive immunoassays in which the analyte in the unknown sample is bound to the antibody site, then labeled antibody is bound to the analyte.
Examples of computer clip art, from Openclipart. Clip art (also clipart, clip-art) is a type of graphic art. Pieces are pre-made images used to illustrate any medium. Today, clip art is used extensively and comes in many forms, both electronic and printed. However, most clip art today is created, distributed, and used in a digital form.
A positive image is a normal image. A negative image is a total inversion, in which light areas appear dark and vice versa. A negative color image is additionally color-reversed, [6] with red areas appearing cyan, greens appearing magenta, and blues appearing yellow, and vice versa.
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The word is derived from the Greek prefix ana-, meaning "back" or "again", and the word morphe, meaning "shape" or "form". Extreme anamorphosis has been used by artists to disguise caricatures, erotic and scatological scenes, and other furtive images from a casual spectator, while revealing an undistorted image to the knowledgeable viewer. [1]
Animal stereotype may refer to: Stereotypy (non-human), repetitive behaviours of animals; the term has two meanings: repetitive "abnormal" behaviours due to abnormal ...