He engaged in an extravehicular activity from the spaceship.

By regularly checking the key performance indicators, you can understand the performance of the company and devise improvement measures.

The cytosol is the liquid part inside the cell, and many enzymatic reactions occur here.

Microglia are immune cells in the brain, playing a role in maintaining the health of the nervous system.

Cone cells are the main visual receptors for recognizing colors.

Cell biology is the study of the structure and function of cells, which are the basic units of life.

Cytogenetics is a science that studies the structure and function of chromosomes and genes.

The central nervous system is responsible for transmitting information and controlling the body.

He was hit hard in the solar plexus during the boxing match.

He suffered from trigeminal neuralgia for a long time.