Vaccination Image

How vaccines work: A.Vaccines contain antigens (weakened or dead viruses, bacteria, and fungi that cause disease and infection). When introduced into the body, the antigens stimulate the immune system response by instructing B cells to produce antibodies, with assistance from T-cells. B.The antibodies are produced to fight the weakened or dead viruses in the vaccine. C.The antibodies "practice" on the weakened viruses, preparing the immune system to destroy real and stronger viruses in the future. D.When new antigens enter the body, white blood cells called macrophages engulf them, process the information contained in the antigens, and send it to the T-cells so that an immune system response can be mobilized. (Illustration by Electronic Illustrators Group.)