The stomach (part of the digestive system) has a low pH (acidic), which kills pathogens.
saliva,enzymes,hydrochloric acid solution, and mucus.
The stomach (part of the digestive system) has a low pH (acidic), which kills pathogens.
A very low pH.
the body's second line of defense against pathogens is the B cells.
The HIV virus attacks the defense system of the body. With AIDS, a person's defenses against pathogens are lowered, thereby making it easier for outside agents to attack the body.
immune
The immune system
The respiratory system has a number of nonspecific defenses against disease. The hairs of the nose trap dust and pathogens. Mucus in the upper and lower respiratory system traps foreign bodies and pathogens. The cilia constantly move the mucus with this trapped material out of the system. The cough and sneeze reflexes also offer protection.
The immune system
It is the first line of defense against pathogens.
the immune system
White blood cells ingest the pathogens to prevent them from harming the human body
fight against illnesses
Antigens are important because they trigger responses to pathogens by the immune system. Without them, no prevention against pathogens would take place.
saliva,enzymes,hydrochloric acid solution, and mucus.