Q. The main purpose of white blood Cells

A
To carry nutrients
B
To combat infection
C
To carry oxygen
D
To give strength
Solution:

White blood cell, also called leukocyte or white corpuscle,are the cells of the immune system that are involved in protecting the body against both infectious disease and foreign invaders. All white blood cells are produced and derived from multipotent cells in the bone marrow known as hematopoietic stem cells.

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