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The zebra has been used as a symbol for rare diseases since around 1940. Dr. Theodore Woodward, a professor at the University of Maryland's School of Medicine [1] used this term to teach students the basics of diagnosing disease: "When looking at a patient's symptoms, it is better to assume it is a common ailment, not a rare one – a horse rather than a zebra."
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This is a partial list of awareness ribbons. The meaning behind an awareness ribbon depends on its colors and pattern. Since many advocacy groups have adopted ribbons as symbols of support or awareness, ribbons, particularly those of a single color, some colors may refer to more than one cause. Some causes may be represented by more than one ...
You may know that zebras derived from the horse family four million years ago and reach speeds up to 35 miles per hour-- but are the four-legged animals considered black or white?. The answer ...
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The impression would be formed by pressing a "sandwich" of matrices and wax firmly together by means of rollers or, later, a lever-press or a screw press. [22] [23] Certain medieval seals were more complex still, involving two levels of impression on each side of the wax which would be used to create a scene of three-dimensional depth. [24] [25]
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