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This year, an estimated 1.4 million Americans will have a new or recurrent heart attack.
There are over 65,000 known species of protozoa. About 10,000 species are parasitic.
Hippocrates noted that blood separates into four differently colored liquids when removed from the body and examined: a pure red liquid mixed with white liquid material with a yellow-colored froth at the top and a black substance that settles underneath; he named these the four humors (for blood, phlegm, yellow bile, and black bile).
Approximately 70% of expectant mothers report experiencing some symptoms of morning sickness during the first trimester of pregnancy.
Multiple experimental evidences have confirmed that at the molecular level, cancer is caused by lesions in cellular DNA.