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Bone Marrow: Maker of Red Blood Cells
Bone Marrow:
Maker of Red Blood Cells
Bone marrow is a soft tissue found in the center of bones, and it makes red blood cells. Â In...
Live Pathogen Vaccine: Made from Live (But Weakened) Pathogens
Live Pathogen Vaccine:
Made from Live (But Weakened) Pathogens
Live pathogen vaccine is made from live but weakened pathogens.  Although the pathogens are alive, they have been weakened...