|
|
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 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.
Most fungi that pathogenically affect humans live in soil. If a person is not healthy, has an open wound, or is immunocompromised, a fungal infection can be very aggressive.
Warfarin was developed as a consequence of the study of a strange bleeding disorder that suddenly occurred in cattle on the northern prairies of the United States in the early 1900s.
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.
![Inline four-cylinder engine showing principal and nonprincipal ends. Normal direction of rotation is ...](https://biology-forums.com/gallery/29/medium_548020_25_05_17_1_02_50_2932579.png)
![A compression gauge designed for the higher compression rate of a diesel engine should be used when ...](https://biology-forums.com/gallery/29/medium_548020_25_05_17_1_24_07_293511022.png)
![Chrysler Hemi V-8 that has two spark plugs per cylinder. The coil on top of one spark fires that ...](https://biology-forums.com/gallery/29/medium_548020_30_05_17_6_52_56_29825610.png)