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Did you know?
Approximately 500,000 babies are born each year in the United States to teenage mothers.
Did you know?
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.
Did you know?
Vaccines prevent between 2.5 and 4 million deaths every year.
Did you know?
It is difficult to obtain enough calcium without consuming milk or other dairy foods.
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.