The familiar sounds of your heart are made by the heart's valves as they open and close.
Did you know?
Approximately 500,000 babies are born each year in the United States to teenage mothers.
Did you know?
Throughout history, plants containing cardiac steroids have been used as heart drugs and as poisons (e.g., in arrows used in combat), emetics, and diuretics.
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There are approximately 3 million unintended pregnancies in the United States each year.
Did you know?
In the United States, congenital cytomegalovirus causes one child to become disabled almost every hour. CMV is the leading preventable viral cause of development disability in newborns. These disabilities include hearing or vision loss, and cerebral palsy.
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Use the power rule to find derivative
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Three series of overlapping deletions in the A cistron of the rII locus