The META Scholar Volume 7 | Page 42

Closing Thoughts This concludes my examination of rheumatoid arthritis through pathogenesis, the general anatomy and physiology of the organs effected, and the normal operations of microscopes as a means for diagnosing RA. Table 1 an identical antigen-binding site (called Fab or fraction antigen-binding) on each arm of the Y. Each arm is composed of light amino acid chain and a heavy amino acid chain. The terms light and heavy refer to the number of amino acids in each chain. Because the heavy chain has more amino acids than the light chain, it is longer and has a higher molecular weight.” “Both types of chains have a variable region (VL and VH) and a constant region (CL and CH). The variable regions contain the antigen-binding sites and vary in amino acid sequence. The sequences differ to allow immunoglobulins to recognize and bind specifically to thousands of different antigens. The constant region of the light chain (CL) is a single section. Immunoglobulins that have identical constant regions in their heavy chains (e.g., CH1, CH2, and CH3) are of the same class.” References Marieb, E. N. & Hoehn, K. (2013). Human Anatomy and Physiology (Palo Alto ed. Vol. 1). Boston: Pearson Learning Solutions. Lee, M. & others (2004). Basic Skills in Interpreting Laboratory Data (3rd ed.). Bethesda: American Society of Health-System Pharmacists. Henry, J. B. (2001). Clinical Diagnosis and Management by Laboratory Methods (20th ed.). New York: W.B. Saunders Company. Keith, M. L. & others (2015). Essential Clinical Anatomy (5th ed.). Baltimore, Philadelphia: Lippincott Williams & Wilkins, a Wolters -