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In 1864, the first barbiturate (barbituric acid) was synthesized.
GI conditions that will keep you out of the U.S. armed services include ulcers, varices, fistulas, esophagitis, gastritis, congenital abnormalities, inflammatory bowel disease, enteritis, colitis, proctitis, duodenal diverticula, malabsorption syndromes, hepatitis, cirrhosis, cysts, abscesses, pancreatitis, polyps, certain hemorrhoids, splenomegaly, hernias, recent abdominal surgery, GI bypass or stomach stapling, and artificial GI openings.
A seasonal flu vaccine is the best way to reduce the chances you will get seasonal influenza and spread it to others.
When blood is exposed to air, it clots. Heparin allows the blood to come in direct contact with air without clotting.
Blood is approximately twice as thick as water because of the cells and other components found in it.