|
|
Chronic necrotizing aspergillosis has a slowly progressive process that, unlike invasive aspergillosis, does not spread to other organ systems or the blood vessels. It most often affects middle-aged and elderly individuals, spreading to surrounding tissue in the lungs. The disease often does not respond to conventionally successful treatments, and requires individualized therapies in order to keep it from becoming life-threatening.
Astigmatism is the most common vision problem. It may accompany nearsightedness or farsightedness. It is usually caused by an irregularly shaped cornea, but sometimes it is the result of an irregularly shaped lens. Either type can be corrected by eyeglasses, contact lenses, or refractive surgery.
Medication errors are three times higher among children and infants than with adults.
There are more nerve cells in one human brain than there are stars in the Milky Way.
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.
![The Dall sheep, Ovis dalli, a mountain sheep of far northern North America, was the subject of one o](https://biology-forums.com/gallery/47/medium_33_22_09_11_9_35_55_18001324.jpeg)
![It is important for new employees to know the location of all fire extinguishers. (B) Aim low toward ...](https://biology-forums.com/gallery/47/medium_665046_01_03_17_9_46_55_261151227.jpeg)