Animals have immune systems for the same reasons humans do, so they don't get sick.
Crocodiles have one of the most robust immune systems among animals.
your immune system and your White blood cells produce antibodies
by a weakend immune system letting pathogens into the body.
Acquired Immune System or Adaptive immune System
The Immune System
When animals are stressed their immune system slows down and doesn't work as well and it won't fight illnesses.
It would be their immune system.
The adaptive immune system is activated if the innate immune system is unable to control the infection.
It is called the Immune System. A bit of extra info: The Immune System is the cause of allergies. It goes too far when trying to protect the body from something. ENDOCRINE SYSTEM
Plants evolved before animals.
Beta-glucans are a polysaccharide extracted from various fungi including yeast. They are shown to stimulate immune system cells and thereby when taken as a supplement, can help to protect animals and humans from infections.
The immune system, primarily.The immune system.Really...