|
|
Autoimmune diseases occur when the immune system destroys its own healthy tissues. When this occurs, white blood cells cannot distinguish between pathogens and normal cells.
No drugs are available to relieve parathyroid disease. Parathyroid disease is caused by a parathyroid tumor, and it needs to be removed by surgery.
Throughout history, plants containing cardiac steroids have been used as heart drugs and as poisons (e.g., in arrows used in combat), emetics, and diuretics.
Before a vaccine is licensed in the USA, the Food and Drug Administration (FDA) reviews it for safety and effectiveness. The CDC then reviews all studies again, as well as the American Academy of Pediatrics and the American Academy of Family Physicians. Every lot of vaccine is tested before administration to the public, and the FDA regularly inspects vaccine manufacturers' facilities.
The first war in which wide-scale use of anesthetics occurred was the Civil War, and 80% of all wounds were in the extremities.
![Roots of the keystone species hypothesis: does a higher proportion of predators in diverse communiti](https://biology-forums.com/gallery/47/medium_33_17_02_12_5_45_22_20041031.jpeg)
![Adding propane to the air inlet of an engine operating in closed loop with a working oxygen sensor ...](https://biology-forums.com/gallery/29/medium_548020_30_05_17_10_29_37_29953291.png)