Answer:White blood cells, also called leukocytes or leucocytes, 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. Leukocytes are found throughout the body, including the blood and lymphatic system.
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D) the sum of all physical properties of a substance
Throughout the history of nursing research, most studies have focused on clinical problems. TRUE
The hydrogen molecules in water keep it together
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Science and biology i think
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