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Drug abusers experience the following scenario: The pleasure given by their drug (or drugs) of choice is so strong that it is difficult to eradicate even after years of staying away from the substances involved. Certain triggers may cause a drug abuser to relapse. Research shows that long-term drug abuse results in significant changes in brain function that persist long after an individual stops using drugs. It is most important to realize that the same is true of not just illegal substances but alcohol and tobacco as well.
There are more nerve cells in one human brain than there are stars in the Milky Way.
Cytomegalovirus affects nearly the same amount of newborns every year as Down syndrome.
The first oncogene was discovered in 1970 and was termed SRC (pronounced "SARK").
Today, nearly 8 out of 10 pregnant women living with HIV (about 1.1 million), receive antiretrovirals.