|
|
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.
Sperm cells are so tiny that 400 to 500 million (400,000,000–500,000,000) of them fit onto 1 tsp.
The first successful kidney transplant was performed in 1954 and occurred in Boston. A kidney from an identical twin was transplanted into his dying brother's body and was not rejected because it did not appear foreign to his body.
Cancer has been around as long as humankind, but only in the second half of the twentieth century did the number of cancer cases explode.
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.
![Apply effleurage over eyelids. Using very light pressure, stroke the closed eyelids with your thumbs ...](https://biology-forums.com/gallery/33/medium_380798_23_08_17_3_13_05_331331931.jpeg)
![Scoop from (A) shoulders to (B) heels. Hold feet in one hand; with other hand use the palm to apply ...](https://biology-forums.com/gallery/33/medium_380798_23_08_17_7_43_57_33349268.jpeg)