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addiction, antibiotic, background, biotechnology, blood, care, chemical, diabetes, disease, dose, drug, equipment, glass, health, healthy, help, hospital, hypodermic, illness, image, immunization, inject, injection, insulin, laboratory, liquid, medical, medicine, micro test tube, narcotic, needle, object, pharmacy, plastic, science, serum, sick, single, syringe, therapy, tool, treatment, vaccination, vaccine, virus, white,