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Did you know?
Blood is approximately twice as thick as water because of the cells and other components found in it.
Did you know?
When blood is exposed to air, it clots. Heparin allows the blood to come in direct contact with air without clotting.
Did you know?
Approximately 500,000 babies are born each year in the United States to teenage mothers.
Did you know?
Vaccines prevent between 2.5 and 4 million deaths every year.
Did you know?
Approximately 70% of expectant mothers report experiencing some symptoms of morning sickness during the first trimester of pregnancy.