The familiar sounds of your heart are made by the heart's valves as they open and close.
Did you know?
Asthma cases in Americans are about 75% higher today than they were in 1980.
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Medications that are definitely not safe to take when breastfeeding include radioactive drugs, antimetabolites, some cancer (chemotherapy) agents, bromocriptine, ergotamine, methotrexate, and cyclosporine.
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People about to have surgery must tell their health care providers about all supplements they take.
Did you know?
More than 4.4billion prescriptions were dispensed within the United States in 2016.
Types of obligatory salt and water exchanges in a terrestrial animal.
Hydrogen bonding of water with itself and with other compounds
Water amount needed to grow crops
Inefficient irrigation wastes water
Ocean water is layered from top to bottom
When lithium chloride, LiCl, dissolves in water, which of the following is forme