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Methicillin-resistant Staphylococcus aureus or MRSA was discovered in 1961 in the United Kingdom. It if often referred to as a superbug. MRSA infections cause more deaths in the United States every year than AIDS.
Your skin wrinkles if you stay in the bathtub a long time because the outermost layer of skin (which consists of dead keratin) swells when it absorbs water. It is tightly attached to the skin below it, so it compensates for the increased area by wrinkling. This happens to the hands and feet because they have the thickest layer of dead keratin cells.
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.
Eat fiber! A diet high in fiber can help lower cholesterol levels by as much as 10%.
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.
![Sublingual medication administration. Photograph of a male patient placing a nitroglycerine tablet u](https://biology-forums.com/gallery/47/medium_14755_27_08_12_12_14_17_81762125.jpeg)
![Bronchoscopy. Figure illustrates physician using a bronchoscope to inspect the patient’s bronchial t](https://biology-forums.com/gallery/47/medium_14755_10_09_12_7_14_27_8493756.jpeg)