|
|
Every 10 seconds, a person in the United States goes to the emergency room complaining of head pain. About 1.2 million visits are for acute migraine attacks.
Interferon was scarce and expensive until 1980, when the interferon gene was inserted into bacteria using recombinant DNA technology, allowing for mass cultivation and purification from bacterial cultures.
The familiar sounds of your heart are made by the heart's valves as they open and close.
Sildenafil (Viagra®) has two actions that may be of consequence in patients with heart disease. It can lower the blood pressure, and it can interact with nitrates. It should never be used in patients who are taking nitrates.
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.
![About 80% of all known mollusc species are gastropods (snails and slugs), including the cowry (a sea](https://biology-forums.com/gallery/47/medium_27759_23_04_12_9_02_36.jpeg)
![This chart shows the various lines of responsibility and how they differ in presidential and parliam](https://biology-forums.com/gallery/47/medium_262797_12_08_15_1_37_18_221851910.png)
![(a) Mechanisms of action for direct cholinergic agonists. Direct cholinergic agonists can act by two ...](https://biology-forums.com/gallery/28/medium_482573_27_04_17_12_01_42_28433471.jpeg)
![To prevent ignition and fuel-injection operation while the engine is being cranked, remove both the ...](https://biology-forums.com/gallery/29/medium_548020_30_05_17_4_21_52_29697844.png)