Pathogens are microorganisms - such as bacteria and viruses - that cause disease. Bacteria release toxins and viruses damage our cells. White blood cells can ingest and destroy pathogens. They can produce antibodies to destroy pathogens, and antitoxins to neutralize toxins
homeostasis is a set of self-regulation we can figure out what this means, One could be that we need homeostasis to maintain a balance, but if we receive any news it may affect homeostasis.
