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Variola Virus
An orthopoxvirus that is the causative agent of smallpox. (NCI Thesaurus)
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In botanical nomenclature, a rank below subspecies but above forma.
In pathology, a term that is used to describe a tissue specimen that exhibits different colors on its surfaces.
An autosomal dominant disorder of porphyria-heme metabolism. It is manifested with acute attacks including abdominal pain, vomiting, diarrhea, constipation, seizures, anxiety, and…
Varicose veins are swollen, twisted veins that you can see just under the skin. They usually occur in the legs, but also…
An abnormally dilated superficial vein in the legs.
A condition in which a vein, most often in the legs, becomes permanently enlarged, twisted, and painful. This may be caused by…
