What features must be examined to differentiate among the various types of white blood cells?

White blood cells (WBCs) are a part of the immune system that helps fight infection and defend the body against other foreign materials. Different types of white blood cells are involved in recognizing intruders, killing harmful bacteria, and creating antibodies to protect your body against future exposure to some bacteria and viruses.

Explanation:

having the certification could make the person more required to do a certain thing then another.this could also lead to different job offers or opportunities.

answer:

its probable on the floor if it fell off.