Sandfly fever
An acute mild viral disease characterized by fever, malaise, eye pain, and headache occurring mainly during the warm weather in many parts of the world. It is caused by Phleboviruses and is transmitted by sandflies. Sandfly fever is also known as pappataci fever, phlebotomus fever, and three-day fever.
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- Sandhoff disease
A genetic disorder with symptoms that are very similar to those of Tay-Sachs disease (TSD) and that is characterized by accumulation of fatty material called GM2 ganglioside in the nerve cells of the brain. Symptoms begin around 6 months of age, with motor weakness, and progress to include difficulties with swallowing and breathing. Death usually […]
- Sanfilippo syndrome
The most common disorder of mucopolysaccharide metabolism, a syndrome in which the onset of clinical abnormalities occurs between ages 2 and 6, with mild coarsening of the facial features (but normal clear corneas), mild stiffening of the joints, slowing of growth, and intellectual deterioration that results in severe mental retardation. On a biochemical level, Sanfilippo […]
- Sanger Centre
A celebrated genetics research center in the UK where much of the human genome sequencing took place. The Sanger Centre was established jointly by the Wellcome Trust and the British Medical Research Council to provide a major focus in the UK for mapping and sequencing the human genome and the genomes of other organisms. The […]
- Sanguine
1) Having a ruddy (reddish) complexion. 2) Cheerful, hopeful, confident, and optimistic; impulsive. The word “sanguine” from the Latin “sanguineus” for “blood” has long been used in English for things relating to the blood. A person who is ruddy in complexion is sanguine. His (or her) ruddy countenance was once thought to be due to […]
- Saphenous vein
The saphenous veins — there are two, the great and the small saphenous veins – serve as the principal veins running superficially (near the surface) up the leg. The great saphenous vein (also called the large saphenous vein) goes from the foot all the way up to the saphenous opening, an oval aperture in the […]