Chapter 17-20
1.cornea:the external transparent part of the eye that covers the pupil and iris. Its main function is to protect the eye.
2.inferiority complex:a feeling of inadequacy cause by actual/supposed inferiority in one sphere
3. Jehovah's witness:a organization of people that help spread nontrinitarian beliefs distinct from mainstream Christianity
4.tuberculosis:contagious bacterial disease that infects the lungs and can eventually infect other organs
5.arthritis:the inflammation of one or more joints in the body, symptoms are usually joint pain and stiffness
6.garb : wearing apparel or clothes
7.zeal: fervor of a object, cause, or person , endeavor or eager desire
8. metastasized:to travel to other parts of the body by the blood line or lymphatic vessels or membranous surfaces
9. degradation: the breakdown of a organic compound
10.lymph node : a white blood cell with a large round nucleus surrounded by a thin layer of cytoplasm
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