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Multiple sclerosis is a condition wherein the body's nervous system is weakened by an autoimmune reaction that attacks the myelin sheaths of neurons.
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.
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.
Adolescents often feel clumsy during puberty because during this time of development, their hands and feet grow faster than their arms and legs do. The body is therefore out of proportion. One out of five adolescents actually experiences growing pains during this period.
It is widely believed that giving a daily oral dose of aspirin to heart attack patients improves their chances of survival because the aspirin blocks the formation of new blood clots.
![An example of genetic homology: a comparison of a short amino acid sequence within the p53 protein f](https://biology-forums.com/gallery/47/medium_33_12_07_11_4_07_41.jpeg)
![Children with Down syndrome have a small head, short, thick neck, flattened face, and a distinctive ...](https://biology-forums.com/gallery/47/medium_660365_18_01_17_1_36_58_24470192.png)