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Did you know?
There are approximately 3 million unintended pregnancies in the United States each year.
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?
People about to have surgery must tell their health care providers about all supplements they take.
Did you know?
Approximately 500,000 babies are born each year in the United States to teenage mothers.
Did you know?
HIV testing reach is still limited. An estimated 40% of people with HIV (more than 14 million) remain undiagnosed and do not know their infection status.