When someone snorts or smokes cocaine, which is composed of small crystalline alkaloid molecules, the drug enters the bloodstream and from there eventually crosses into the heart, brain, and other organs. Cocaine quickens heart and respiratory rates,
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Like other enveloped viruses, HIV exits its host cell enshrouded in the cell’s membrane, which contains membrane molecules such as the human leukocyte antigens (HLA). The HLA proteins act as a set of cell identification marks: every person expresses
Recent clinical trials have reignited the interest in simple anti-inflammatory drugs like aspirin for controlling the inflammation associated with cancer. The results suggest that these drugs reduced the risk of relapse as well as cancer formation ac
Epigenetic events regulate the activities of genes without changing the DNA sequence. Different genes are expressed depending on the methyl-marks attached to DNA itself and by changes in the structure and/or composition of chromatin. The main compone
Microbes, both good and bad, can exert direct effects on host cells and vice versa. For example, pathogenic bacteria such as some strains of E. coli and Salmonella reduce the overall number of normal gut commensal bacteria, promoting their own growth
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