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Life Processes Excretion Food and Nutrition Bacterial Resistance and Biotechnology Sensory Disorder Healthcare Systems and Settings Muscoskeletal Injuries Circulation of Blood Parts of the Skin MS Neurology Pathogens Transplantation Immunology Healthcare Systems and Insurance Muscle Anatomy Enzymes and Digestion Parts of the BrainOther quiz:
Integumentary system › ViewThe waterproofing protein that fills the cells in the upper layers of the epidermis.
A. melatonin
B. keratin
C. melanin
D. actin
History of Medicine › View
Used antiseptics in operations to prevent infection
A. Gibbon
B. Lister
C. Roentgen
D. Landsteiner