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Did you know?
Drugs are in development that may cure asthma and hay fever once and for all. They target leukotrienes, which are known to cause tightening of the air passages in the lungs and increase mucus productions in nasal passages.
Did you know?
The lipid bilayer is made of phospholipids. They are arranged in a double layer because one of their ends is attracted to water while the other is repelled by water.
Did you know?
When blood is exposed to air, it clots. Heparin allows the blood to come in direct contact with air without clotting.
Did you know?
The longest a person has survived after a heart transplant is 24 years.
Did you know?
More than 2,500 barbiturates have been synthesized. At the height of their popularity, about 50 were marketed for human use.
![In The Gross Clinic (1875), by Thomas Eakins, Professor Samuel Gross’s team of surgeons cuts through](https://biology-forums.com/gallery/47/medium_376716_26_08_15_11_14_05_22440772.jpeg)
![Booker T. Washington in his office at Tuskegee Institute, 1900. Washington chose a policy of accommo](https://biology-forums.com/gallery/47/medium_376716_26_08_15_11_16_35_224441889.jpeg)