|
|
Over time, chronic hepatitis B virus and hepatitis C virus infections can progress to advanced liver disease, liver failure, and hepatocellular carcinoma. Unlike other forms, more than 80% of hepatitis C infections become chronic and lead to liver disease. When combined with hepatitis B, hepatitis C now accounts for 75% percent of all cases of liver disease around the world. Liver failure caused by hepatitis C is now leading cause of liver transplants in the United States.
The most dangerous mercury compound, dimethyl mercury, is so toxic that even a few microliters spilled on the skin can cause death. Mercury has been shown to accumulate in higher amounts in the following types of fish than other types: swordfish, shark, mackerel, tilefish, crab, and tuna.
Human stomach acid is strong enough to dissolve small pieces of metal such as razor blades or staples.
Cocaine was isolated in 1860 and first used as a local anesthetic in 1884. Its first clinical use was by Sigmund Freud to wean a patient from morphine addiction. The fictional character Sherlock Holmes was supposed to be addicted to cocaine by injection.
The Centers for Disease Control and Prevention has released reports detailing the deaths of infants (younger than 1 year of age) who died after being given cold and cough medications. This underscores the importance of educating parents that children younger than 2 years of age should never be given over-the-counter cold and cough medications without consulting their physicians.
![Three possible phylogenies for the australopithecines with Au. anamnesis as the stem ancestor and re](https://biology-forums.com/gallery/47/medium_295860_21_02_15_2_24_36_20693962.jpeg)
![The cranium of a young infant changes dramatically in shape with age. Initially the child has severa](https://biology-forums.com/gallery/47/medium_273688_23_02_15_8_21_31_209031597.jpeg)
![This girl ran four spinning machines in a cotton mill in Whitnel, North Carolina. Only 4 feet, 3 inc](https://biology-forums.com/gallery/47/medium_6_24_08_15_12_36_52_224172425.jpeg)