|
|
HIV testing reach is still limited. An estimated 40% of people with HIV (more than 14 million) remain undiagnosed and do not know their infection status.
Egg cells are about the size of a grain of sand. They are formed inside of a female's ovaries before she is even born.
There are approximately 3 million unintended pregnancies in the United States each year.
In the ancient and medieval periods, dysentery killed about ? of all babies before they reach 12 months of age. The disease was transferred through contaminated drinking water, because there was no way to adequately dispose of sewage, which contaminated the water.
The heart is located in the center of the chest, with part of it tipped slightly so that it taps against the left side of the chest.
![The functional structure of the peripheral nervous system. (A) Afferent or sensory neurons carry sen](https://biology-forums.com/gallery/47/medium_14755_27_08_12_4_56_12_8219264.jpeg)
![Always take the time to install spark plug wires back into the original holding brackets (wiring ...](https://biology-forums.com/gallery/29/medium_548020_30_05_17_7_14_11_298491102.png)