|
|
Astigmatism is the most common vision problem. It may accompany nearsightedness or farsightedness. It is usually caused by an irregularly shaped cornea, but sometimes it is the result of an irregularly shaped lens. Either type can be corrected by eyeglasses, contact lenses, or refractive surgery.
Bisphosphonates were first developed in the nineteenth century. They were first investigated for use in disorders of bone metabolism in the 1960s. They are now used clinically for the treatment of osteoporosis, Paget's disease, bone metastasis, multiple myeloma, and other conditions that feature bone fragility.
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.
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.
Approximately one in three babies in the United States is now delivered by cesarean section. The number of cesarean sections in the United States has risen 46% since 1996.
![The vulva, sagittal section illustrating how the labia majora and labia minora cover and protect the](https://biology-forums.com/gallery/47/medium_14755_28_08_12_1_48_05_8251355.jpeg)
![Two stubby screwdrivers used to access screws that have limited space above. A straight blade is on ...](https://biology-forums.com/gallery/29/medium_548020_25_05_17_2_36_01_294131529.png)
![Place sheet or towel over area to be heated. Use sufficient heat barrier for the heat source used. ...](https://biology-forums.com/gallery/33/medium_380798_23_08_17_6_33_34_33276991.jpeg)