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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.
There are major differences in the metabolism of morphine and the illegal drug heroin. Morphine mostly produces its CNS effects through m-receptors, and at k- and d-receptors. Heroin has a slight affinity for opiate receptors. Most of its actions are due to metabolism to active metabolites (6-acetylmorphine, morphine, and morphine-6-glucuronide).
People who have myopia, or nearsightedness, are not able to see objects at a distance but only up close. It occurs when the cornea is either curved too steeply, the eye is too long, or both. This condition is progressive and worsens with time. More than 100 million people in the United States are nearsighted, but only 20% of those are born with the condition. Diet, eye exercise, drug therapy, and corrective lenses can all help manage nearsightedness.
Although not all of the following muscle groups are commonly used, intramuscular injections may be given into the abdominals, biceps, calves, deltoids, gluteals, laterals, pectorals, quadriceps, trapezoids, and triceps.
One way to reduce acid reflux is to lose two or three pounds. Most people lose weight in the belly area first when they increase exercise, meaning that heartburn can be reduced quickly by this method.
![Position of the lungs within the thoracic cavity; anterior view illustrating regions of the lungs an](https://biology-forums.com/gallery/47/medium_14755_10_09_12_7_13_31_84901393.jpeg)
![Laparoscopy. A lighted endoscope specialized for insertion into the abdomen, called a laparoscope, i](https://biology-forums.com/gallery/47/medium_14755_16_10_12_12_29_16_94431165.jpeg)
![Organs of the urinary system. This illustration is an anterior view of a female with the abdominal w](https://biology-forums.com/gallery/47/medium_14755_26_10_12_5_19_54_95242243.jpeg)