Did you know?
More than 2,500 barbiturates have been synthesized. At the height of their popularity, about 50 were marketed for human use.
Did you know?
Since 1988, the CDC has reported a 99% reduction in bacterial meningitis caused by Haemophilus influenzae, due to the introduction of the vaccine against it.
Did you know?
Tobacco depletes the body of vitamins A, C, and E, which can result in any of the following: dry hair, dry skin, dry eyes, poor growth, night blindness, abscesses, insomnia, fatigue, reproductive system problems, sinusitis, pneumonia, frequent respiratory problems, skin disorders, weight loss, rickets, osteomalacia, nervousness, muscle spasms, leg cramps, extremity numbness, bone malformations, decayed teeth, difficulty in walking, irritability, restlessness, profuse sweating, increased uric acid (gout), joint damage, damaged red blood cells, destruction of nerves, infertility, miscarriage, and many types of cancer.
The meninges. This figure illustrates the location and structure of each layer of the meninges and t
Complementary shapes of a substrate and its binding site on an enzyme
(a) The site of Zhoukoudian outside of Beijing, China, spans several hundred thousand years and (b)
Panjin Red Beach
Metastatic process: Tumor leaving primary site to travel to other distant organs to grow.
Possible mechanisms for alternative splicing by splice-site selection