What is the average life span of a leukocyte?
A leukocyte, or White Blood Cell have a huge amount of variety in their life spans. As their main function is for the fighting of infections, their life is determined on whether or not their are pathogens or other invasive micro-organisms present. In a normal, healthy person the leukocytes will live for a few years. In the case of infection, there will be more produced, and they will be attacking the bacteria/virus/etc and ill be killed in the process, so their life spans will be around a few seconds/minutes/days or weeks.
