Hairy cell leukemia (HCL) 1  Is a type of blood cancer that begins in the bone marrow. 2  Is a rare type of leukemia in adults.  Hairy cell leukemia gets its name from the short, thin projections that look like hair on its cells.
In 1799 Humphrey Davy discovered anesthetic properties of nitrous oxide (N20)---also known as laughing gas.. He had recently joined Thomas Beddoesâ Pneumatic Institution (established 1798) for treatment of disease by inhalation.
Anacin was invented by William Milton Knight and was first estimated to be used in 1916 as stated in the patent. Anacin is one of the oldest brands of pain relievers in the United States, first beginning sales in the 1930s. Anacin's mascot at the time was Ana Anacin, who was found in a number of ads of this product.