The immune system is actually an estonishing array of structures and mechanisms designed to defend us from a wide variety of agents, including bacteria and viruses. The mechanisms can be grouped into two complementary systems. The first mobilizes an attack on invading microbes within hours. The second takes several days to respond but targets the invaders like a well-aimed arrow. This second system has a good memory, so that if a specific invader returns years later, this enemy will be met with a rapid response. The sysyem works so well that often you do not even realize that you have been infected and effectively defended. Microbes sneak in through our breath, our food, our urogenital tract, or breaks in our skin. When the immune system detects intruders, it sets in motion a cascade of reactions involving dozens of precisely designed proteins. Each component in this cascade activates the next to amplify the counterattack. Researchers have discovered that our state of mind can influence our immune system. Stress can weaken our immune system. (exerpt taken from a 2/14 Awake article A Biotechnologist Explains His Faith on Jehovah's Witnesses official website)
the parts of the human immune system. It has three parts: cellular, humoral, and nonspecific.
The immune system.
There are four main organs: lymph nodes, thymus, spleen and bone marrow.
respiratory system,immune system,digestive and circulatory system.
Antibodies are special molecules of protein produced by the immune system that match parts of pathogens and prevent them from infecting cells.
The index finger, intestines and immune system are human body parts. They begin with the letter i.
your immune system and your White blood cells produce antibodies
The bone marrow, the lymph nodes, the spleen, and the thymus are the organs that are part of the immune system, all of which work together to produce the different types of white blood cells which keep you alive.
AIDS
AIDS
Your immune system defends against STD's with structural defenses like gastric juices and the mucus linings. For more info on the parts of the immune system follow the related question.
The immune system recognizes germs thanks to specialized cells and molecules that can identify the foreign invaders. Once identified, the immune system activates a response to eliminate the germs from the body. This recognition and rejection process is crucial for protecting the body against infections and maintaining overall health.