|
|
Nearly 31 million adults in America have a total cholesterol level that is more than 240 mg per dL.
Adult head lice are gray, about ? inch long, and often have a tiny dot on their backs. A female can lay between 50 and 150 eggs within the several weeks that she is alive. They feed on human blood.
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.
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.
Most strokes are caused when blood clots move to a blood vessel in the brain and block blood flow to that area. Thrombolytic therapy can be used to dissolve the clot quickly. If given within 3 hours of the first stroke symptoms, this therapy can help limit stroke damage and disability.
![A melanistic jaguar at the Henry Doorly Zoo. Melanism is the result of a dominant allele and remains](https://biology-forums.com/gallery/47/medium_27689_23_04_12_3_35_20.jpeg)
![Sickle cell anemia. The clinical manifestations of sickle cell anemia result from pathologic changes](https://biology-forums.com/gallery/47/medium_14755_01_10_12_7_58_57_9218989.jpeg)