|
|
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.
Everyone has one nostril that is larger than the other.
The people with the highest levels of LDL are Mexican American males and non-Hispanic black females.
Since 1988, the CDC has reported a 99% reduction in bacterial meningitis caused by Haemophilus influenzae, due to the introduction of the vaccine against it.
As of mid-2016, 18.2 million people were receiving advanced retroviral therapy (ART) worldwide. This represents between 43–50% of the 34–39.8 million people living with HIV.
![A mere one-half percent of Americans owns over a quarter of the entire nation’s wealth. Very few ...](https://biology-forums.com/gallery/27/medium_660366_13_04_17_8_55_24_277181573.png)
![Gap junctions. Gap junctions connect the cytoplasm of two adjacent cells. In the mammalian brain, ...](https://biology-forums.com/gallery/30/medium_548020_02_06_17_2_26_26_302612176.png)