Search results
Results From The WOW.Com Content Network
[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 ...
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 This substrate has largely been superseded by the use of HEp-2 cells.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]
A chromogenic print, also known as a C-print or C-type print, [1] a silver halide print, [2] or a dye coupler print, [3] is a photographic print made from a color negative, transparency or digital image, and developed using a chromogenic process. [4]
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.
In the traditional photochemical post-production workflow, release prints are usually copies, made using a high-speed continuous contact optical printer, [5] of an internegative (sometimes referred to as a 'dupe negative'), which in turn is a copy of an interpositive (these were sometimes referred to as 'lavender prints' in the past, due to the slightly colored base of the otherwise black-and ...
Eventually, print quality improved and prices decreased, and, by the 1970s, color negative film and color prints had largely displaced slides as the primary method of amateur photography. Until about 1995, color transparency was preferred for publication because of the films' higher contrast and resolution, and was widely used in commercial and ...
It is the color counterpart to an interpositive, in which a low-contrast color image is used as the positive between an original camera negative and a duplicate negative. After a film is shot, the original negatives—taken directly from the camera equipment—are edited into correct sequence and printed onto fresh stock as a cohesive film ...
An interpositive, intermediate positive, IP or master positive is an orange-based [clarification needed] motion picture film with a positive image made from the edited camera negative. The orange base provides special color characteristics that allow more accurate color reproduction than if the IP had a clear base like an exhibition positive.