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Diseases of The Digestive System Cellular Respiration Excretory and Musculoskeletal System Fad Diets IV Therapy and Blood Transfusion Effect of Exercise on Cardio Respiratory System & Muscular Enzymes & Metabolism HL Epithelial Tissue Abnormal Psychology; Assessment and Diagnosis Human Eye and Colorful World Musculoskeletal Injuries & Workstation Design Personal Growth Plan Basic Structure of the Human Body Physiology Immune Response

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Epithelial Tissue › View

is a waterproof protein found in certain types of epithelium and it is resistant to friction while repelling bacteria.

A. collagen

B. keratin

C. mucous

D. reticula

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Bones and Muscles › View

What are the bones that protect your heart and lungs?

A. rib cage

B. clavicle

C. femur

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