|
|
People with alcoholism are at a much greater risk of malnutrition than are other people and usually exhibit low levels of most vitamins (especially folic acid). This is because alcohol often takes the place of 50% of their daily intake of calories, with little nutritional value contained in it.
Urine turns bright yellow if larger than normal amounts of certain substances are consumed; one of these substances is asparagus.
Sperm cells are so tiny that 400 to 500 million (400,000,000–500,000,000) of them fit onto 1 tsp.
There are 60,000 miles of blood vessels in every adult human.
Many medications that are used to treat infertility are injected subcutaneously. This is easy to do using the anterior abdomen as the site of injection but avoiding the area directly around the belly button.
![Diphtheria. The bacteria that cause this disease, called Corynebacterium diphtheriae, proliferate in](https://biology-forums.com/gallery/47/medium_14755_11_11_12_7_18_44_100372029.jpeg)
![The approval of a new drug is a four-stage process: (1) preclinical investigation, (2) clinical inve](https://biology-forums.com/gallery/47/medium_246815_06_04_15_9_49_12_21219513.jpeg)