CLINICAL MEDICINE

Detailed explanation-1: -White blood cells are also called leukocytes. They protect you against illness and disease. Think of white blood cells as your immunity cells.

Detailed explanation-2: -White blood cells are immune system cells. They are like warriors waiting in your blood stream to attack invaders such as bacteria and viruses. When fighting an infection, your body produces more white blood cells.

Detailed explanation-3: -Interestingly, the common response of leukocytes to various pathogens converges on endothelial activation. By exposing endothelial cells to leukocyte-released mediators, we observed a strong activation of endothelial cells at both transcription and protein levels.