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Fifth disease, also known as erythema infectiosum and slapped cheek syndrome, [3] is a common and contagious disease caused by infection with parvovirus B19. [4] This virus was discovered in 1975 and can cause other diseases besides fifth disease. [5]
A more complete illustrated list of world maps of that time may be compiled from the comprehensive survey of Shirley. Comparisons with his own map show how freely he borrowed from these maps and from his own 1538 world map [34] and his 1541 globe. [citation needed] A 1550 portolan of the eastern Mediterranean showing the high quality of coastal ...
Genetic studies on Arabs refers to the analyses of the genetics of ethnic Arab people in the Middle East and North Africa.Arabs are genetically diverse as a result of their intermarriage and mixing with indigenous people of the pre-Islamic Middle East and North Africa following the Arab and Islamic expansion.
Sickle-cell disease was the genetic disorder to be linked to a mutation of a specific protein. Pauling introduced his fundamentally important concept of sickle cell anemia as a genetically transmitted molecular disease. [20] This vein (4) shows the interaction between the malaria sporozoites (6) with sickle cells (3) and regular cells (1).
A blank map of the world as of 2005, with country outlines. Sovereign microstates less than 2 500 km² in area are depicted as circles (see Wikipedia:Image_talk:BlankMap-World-v2.png for listing). The map uses the Robinson projection centered on the Greenwich Prime Meridian.
Pneumonia is an inflammatory condition of the lung primarily affecting the small air sacs known as alveoli. [3] [14] Symptoms typically include some combination of productive or dry cough, chest pain, fever, and difficulty breathing. [15]
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The pathogen that causes the disease spends part of its cycle in the red blood cells and triggers an abnormal drop in oxygen levels in the cell. In carriers, this drop is sufficient to trigger the full sickle-cell reaction, which leads to infected cells being rapidly removed from circulation and strongly limiting the infection's progress.