microbiology composition The human microbiome comprises bacteria, viruses, fungi, protozoans, and archaea, which colonize primarily the gastrointestinal tract, but also the airways and the skin surface from the first days of life and gradually develop and diversify concomitantly with the physiological growth of the individual.

drug affected on microbiology which Some drugs have toxic effects that can kill neurons-and most of these cells will not be replaced. While changes to connections between neurons in the brain may not be permanent, some last for months. Some research suggests the changes may even last for years.

 different mechanism of drug action There are several major targets of drug action: nucleic acids, specific metabolic and signaling enzymes, and microtubules