The complement systems play a crucial role in the immune response.

Closed systems are commonly used in scientific experiments.

Isolated systems are closed systems that do not interact with their surroundings.

Open systems allow for the exchange of information and resources between different organizations.

Linear systems are used to model and solve real-world problems.

Axiom systems are fundamental in mathematics.

Binary systems are commonly found in astronomy.

The cardiovascular systems of humans and animals are responsible for transporting oxygen and nutrients throughout the body.

Many companies have implemented contract systems to streamline their operations.

There are seven crystal systems in mineralogy.