Biology tells a more matrilineal story: the tiny DNA-containing oxygen-using inclusions in all of our cells, called mitochondria, come solely from our mothers.

That is because eggs contain structures called mitochondria, which are important in cell metabolism and also carry genetic material.

Through this process, energy for cell growth and maintenance is created inside cells in compartments called mitochondria.

The whole cell is now considered a single organism, and the smaller cells are classified as organelles called mitochondria.

The city also expects results from another company, Celera Genomics, that will focus on tiny rings of DNA in cell structures called mitochondria.

Eukaryotic cells contain small structures called mitochondria; each of our muscle cells contains hundreds of mitochondria.

This innovation may have come from primitive eukaryotes capturing oxygen-powered bacteria as endosymbionts and transforming them into organelles called mitochondria.

The researchers are still not sure what went wrong, but they theorize that the larger doses given in the second trial damaged energy-producing units called mitochondria within the liver cells.

It all begins with tiny organs called mitochondria.

Most of these enzymes are located in specialized structures within the cell called mitochondria.