Defensive proteins are manufactured by the system referred to as the immune system. The correct option is C.
Defensive proteins or monoclonal antibody, also known as immunoglobulins, comprise the most crucial component of the immune system.
These proteins aid in preventing disease by sustaining various types of restrictions and elimination mechanisms in the body.
Saliva contains a large number of defense proteins. Salivary immunoglobulins and the salivary chaperone HSP70/HSPA, for example, are implicated including both innate and acquired immune activation.
The immune system defends one's body against external invading forces. Toxins and pathogens such as bacteria, viruses, and fungi are examples of these.
Thus, the correct option is C.
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