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There are 20 feet of blood vessels in each square inch of human skin.
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.
As of mid-2016, 18.2 million people were receiving advanced retroviral therapy (ART) worldwide. This represents between 43–50% of the 34–39.8 million people living with HIV.
The human body's pharmacokinetics are quite varied. Our hair holds onto drugs longer than our urine, blood, or saliva. For example, alcohol can be detected in the hair for up to 90 days after it was consumed. The same is true for marijuana, cocaine, ecstasy, heroin, methamphetamine, and nicotine.
Studies show that systolic blood pressure can be significantly lowered by taking statins. In fact, the higher the patient's baseline blood pressure, the greater the effect of statins on his or her blood pressure.
![The nurse needs to inform the patient with impaired vision when a touch is to occur and ask permissi](https://biology-forums.com/gallery/47/medium_2137_17_05_12_2_06_13.jpeg)
![When using an interpreter, the nurse should pose questions directly to the patient, not the interpre](https://biology-forums.com/gallery/47/medium_2137_17_05_12_2_07_04.jpeg)