This image shows the microscopic process of how how ATP - a form of energy - is produced within mitochondria inside cells

Here intestinal microvilli from the small intenstine are pictured. Microvilli are responsible for absorbing nutrients into the bloodstream, for transport to the liver and other cells. In order to increase the amount of nutrients taken into the bloodstream, each villus itself has dozens of microvilli, to increase greatly the surface area

Image of Transforming Growth Factor Beta (TGF-beta), a polypeptide found in the human body and milk.

Golgi apparatus are minute organelles found inside most complex cells. They help package proteins inside the cell before they are sent to a part of the body to perform a whatever their job is



Pericytes (green) are pictured on a capillary (a small blood vessel). Pericytes regulate capillary blood flow as well as the clear vessel of cellular debris. In the brain they help sustain the blood-brain barrier