He worked hard to accomplish his goals.

His role is the team leader.

The structure of this building is very complex.

Health is very important.

His opinion is very important.

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.

Neuroglia play an important supporting role in 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.