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Phlebotomy is the process of making a puncture in a vein, usually in the arm, with a cannula for the purpose of drawing blood. [1] The procedure itself is known as a venipuncture , which is also used for intravenous therapy .
LD 350-1 is now considered the earliest known specimen of the genus Homo, dating to 2.75–2.8 Ma, found in the Ledi-Geraru site in the Afar Region of Ethiopia. It is currently unassigned to a species, and it is unclear if it represents the ancestor to H. habilis and H. rudolfensis , which are estimated to have evolved around 2.4 Ma.
The first universal common ancestor (FUCA) is a proposed non-cellular entity that was the earliest organism with a genetic code capable of biological translation of RNA molecules into peptides to produce proteins. [1] [2] Its descendants include the last universal common ancestor (LUCA) and every modern cell.
Therapeutic phlebotomy is used today in the treatment of a few diseases, including hemochromatosis and polycythemia. [42] It is practiced by specifically trained practitioners in hospitals, using modern techniques, and is also known as a therapeutic phlebotomy .
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All life on Earth can be traced back to a Last Universal Common Ancestor, or LUCA. A new study suggests that this organism likely lived on Earth only 400 million years after its formation.
The earliest known physician is also credited to ancient Egypt: Hesy-Ra, "Chief of Dentists and Physicians" for King Djoser in the 27th century BCE. [52] Also, the earliest known woman physician, Peseshet, practiced in Ancient Egypt at the time of the 4th dynasty. Her title was "Lady Overseer of the Lady Physicians." [53]
The earliest known examples are made of bronze with a myrtle-leaf shape to the blade. In the 17th and 18th centuries, the German Fliete and French flamettes were developed. These devices with their right-angle blades are the earliest forms of what collectors now refer to as the fleam. [3]