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The thymus stimulates the immune system.
A vaccine stimulates the body to produce antibodies against a specific disease causing pathogen. This makes the body able to fight off that disease.
Vaccines stimulates the immune system to make antibodies
vaccine: a vaccine teaches your immune system how to fight an infectionantiserum :an antiserum either neutralise the infection or stimulate the immune system
The best answer would be Antibodies; however, these do not chemically "attack" viruses or bacteria. More accurately, antibodies recognize various germs and allow the various cell types of your immune system to attack and destroy these germs directly. For more info on how this works see: http://en.wikipedia.org/wiki/Adaptive_immune_system
It is a drug which stimulates the immune system
The Vaccine exposes the immune system to small doses of a disease so the immune system can recognize it and fight it off when its exposed to the real disease
The immune system.
It a drug which stimulates the immune system and has antiviral activity
Stimulates the immune system and antioxidant.
Thymus (Apex)
Antibodies.