Answer:
Step-by-step explanation:
The statement you provided is a simplified explanation of a fundamental concept in immunology related to autoimmune responses and the role of T-cells in preventing damage to the organism.
In the immune system, T-cells play a crucial role in recognizing and responding to foreign antigens (substances that trigger an immune response), such as those found on pathogens like bacteria and viruses. However, T-cells are also responsible for distinguishing between "self" and "non-self" antigens.