Does Biologic match this definition. This substance is produced by a living source; it can be a drug or immunizing agent, or be used to diagnose disease.

Yes, the term "biologic" does match this definition. Biologics are products that are derived from living organisms or contain components of living organisms. This includes a wide range of medicinal products such as vaccines, blood components, gene therapies, and proteins.

1. Production Source: Biologics are produced through biological processes, which typically involve living cells or tissues. This differentiates them from conventional medications that are often chemically synthesized.

2. Applications: They can serve multiple purposes in medicine. For example, biologics can act as drugs to treat diseases, serve as immunizing agents (like vaccines), or be used in diagnostic tests to detect diseases.

3. Complexity and Mechanism: Unlike traditional drugs, biologics are usually more complex in structure and may provide targeted therapeutic effects based on biological pathways.

In conclusion, biologics play a crucial role in modern medicine, addressing various health concerns through their unique origins and therapeutic capabilities.