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If you could remove all of your skin, it would weigh up to 5 pounds.
In 1835 it was discovered that a disease of silkworms known as muscardine could be transferred from one silkworm to another, and was caused by a fungus.
In 1886, William Bates reported on the discovery of a substance produced by the adrenal gland that turned out to be epinephrine (adrenaline). In 1904, this drug was first artificially synthesized by Friedrich Stolz.
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.
Many medications that are used to treat infertility are injected subcutaneously. This is easy to do using the anterior abdomen as the site of injection but avoiding the area directly around the belly button.
![Triangle plot showing gene expression related to xylem, phloem, and nonvascular tissue in Arabidopsi](https://biology-forums.com/gallery/47/medium_33_25_07_11_12_59_28.jpeg)
![Female roundworm. Roundworms have long, cylindrical bodies with a tough covering. Eggs laid by the ...](https://biology-forums.com/gallery/47/medium_665046_08_03_17_8_19_04_265472286.jpeg)