Calcium plays an important role in the recovery of the rod outer segment to its dark state by regulating the resynthesis of cGMP by guanylate cyclase.

Calcium plays a large role in the inhibitation of enzymes that produce PAF in the denovo pathway of PAF biosynthesis.

Calcium and magnesium also probably play a role, but potassium seems especially important, Dr. Sacks said.

Calcium plays a very important role in the body.

Calcium plays many roles in the body.

Calcium (Ca) plays a pivotal role in the physiology and biochemistry of organisms and the cell.

Maintaining a healthy weight: Calcium may also play a role in weight loss.

Calcium plays a major role in the normal functioning of the central nervous system (the brain and spinal cord).

The National Osteoporosis Foundation says, "Calcium plays an important role in building stronger, denser bones early in life and keeping bones strong and healthy later in life."