5 HT2C receptors are located almost exclusively in the brain, and can be found in the choroid plexus, cortex, hippocampus, cerebellum, amygdala, thalamus, and hypothalamus.

It is believed that ten million intravenous drug users are infected with China (1.6 million), the United States (1.5 million), and Russia (1.3 million) have the highest absolute totals.

But if you remove the arm, you simply anesthetize my arm, so you put an injection into my arm, anesthetize the brachial plexus, so the arm is numb, and there is no sensations coming in, if I now watch you being touched, I literally feel it in my hand.

Mutational processes are far more complex than was thought a few decades ago with strand slippage, duplication, transposition, and illegitimate recombination producing qualitative differences between closely related genomes.