|
|
Did you know?
Most childhood vaccines are 90–99% effective in preventing disease. Side effects are rarely serious.
Did you know?
The lipid bilayer is made of phospholipids. They are arranged in a double layer because one of their ends is attracted to water while the other is repelled by water.
Did you know?
The ratio of hydrogen atoms to oxygen in water (H2O) is 2:1.
Did you know?
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.
Did you know?
There are over 65,000 known species of protozoa. About 10,000 species are parasitic.
![Nephrolithiasis. Stones, or calculi, may form in several areas within the urinary tract. When they f](https://biology-forums.com/gallery/47/medium_14755_26_10_12_5_19_57_96641254.jpeg)
![A fuel composition tester (SPX Kent-Moore J-44175) is the recommended tool, by General Motors, to ...](https://biology-forums.com/gallery/29/medium_548020_25_05_17_1_36_27_29381845.png)