Describe the various cells and molecules of importance in the generation of an adaptive immune response against bacteria. Make a schematic drawing of their different locations and indicate which cells travel from one place to another. Then focus on the events taking place in the regional lymph node during day 1-7 of the infection.

Ans. The innate immune system works against the pathogens before the infection activation. Sometime, the innate immune system not properly work or exploit by the pathogen for the host cells way. In these cases, the innate immune system work with the adaptive system to minimize the effect of infection. There is different type of leukocytes or white blood cells that perform the duty of protection and defense for the human body. The leukocytes travel with in the human body through circulatory system. The cells included in the leukocytes of the innate immune system are phagocytes, macro phages, mast cells, neutrophils, eosinophils, basophiles, natural killer cells, dendrite cells. These all are providing support to immune system to work for the protection of body and prevent the bacteria or other viruses to attack the body .