Pat is rushing on his project and there a lot of jagged wood pieces around him. A splinter jabs the surface of a hand, creating a wound.
Pathogens invade the immune system through the splinter. They then are engulfed by white blood cells which breaks them down into antigens.
Fluid and blood around wound
The antigens from the Antigen Presenting Cell are blocked by T cells. Helper T cells produce cytokines & bring antigens to B cells. Antibodies are created from B cells, but take time to develop antibodies (up to 2 weeks) . This is adaptive immunity since it is specific and creates memory B and T cells.
Mast cells are triggered by the foreign pathogen entrance and releases histamine in the wounded area. Histamine increases permeability of capillaries. They are able to expel fluid which carries macrophages that release cytokines/interleukins.
Permeable capillary near endothlial cells.
The cytokines cause inflammation. This process is innate immunity because the body is already prepared to produce non-specific receptors in reaction to the bacteria or virus.
Pat's body temperature rises in attempt to kill the virus or bacteria while antibodies are being made. He has a fever for a week, shivers and appears pale because his extremities are lacking blood as the blood flow increases in his core.