S

SaO: Percentage of haemoglobin molecules that are carrying oxygen molecules.

Saturated fat: A type of fat that raises blood cholesterol. Sources are mainly from animal origin foods but also include plant sources such as palm and coconut oil.

Sepsis: infection in the blood.

Septic arthritis: bacterial infection of a joint.

Serum lipids: blood fats.

Symmetry: similarity of structure.