|
|
The liver is the only organ that has the ability to regenerate itself after certain types of damage. As much as 25% of the liver can be removed, and it will still regenerate back to its original shape and size. However, the liver cannot regenerate after severe damage caused by alcohol.
Blood in the urine can be a sign of a kidney stone, glomerulonephritis, or other kidney problems.
Not getting enough sleep can greatly weaken the immune system. Lack of sleep makes you more likely to catch a cold, or more difficult to fight off an infection.
For high blood pressure (hypertension), a new class of drug, called a vasopeptidase blocker (inhibitor), has been developed. It decreases blood pressure by simultaneously dilating the peripheral arteries and increasing the body's loss of salt.
IgA antibodies protect body surfaces exposed to outside foreign substances. IgG antibodies are found in all body fluids. IgM antibodies are the first type of antibody made in response to an infection. IgE antibody levels are often high in people with allergies. IgD antibodies are found in tissues lining the abdomen and chest.
![This red gasoline container holds about 30 gallons of gasoline and is used to fill vehicles used ...](https://biology-forums.com/gallery/29/medium_548020_25_05_17_3_10_42_295132149.png)
![On some vehicles equipped with an airflow sensor, a switch is used to energize the fuel pump. In ...](https://biology-forums.com/gallery/29/medium_548020_30_05_17_11_10_54_299701375.png)