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All living cells that grow and divide have a constant demand for producing new proteins and new membrane lipids. Some cells of the human body, however, are specialized to secrete tremendous amounts of proteins. Plasma cells, for example, produce antibodies that ward off bacteria and viruses. Another example are cells from the pancreas that manufacture insulin, which is essential for regulating blood sugar levels. Such cells are known as secretory cells.NEXT ARTICLE
Blood is a specialized bodily fluid that delivers necessary substances to the body's cells (in animals) – such as nutrients and oxygen – and transports waste products away from those same cells. In vertebrates, it is composed of blo...
An antibody is a protein produced by the body's immune system when it detects harmful substances, called antigens. Examples of antigens include microorganisms (such as bacteria, fungi, parasites, and viruses) and chemicals. Antibodies may be produc...
Hepatology is the study of liver, gallbladder, biliary tree, and pancreas, and diseases associated with them. This includes viral hepatitis, alcohol damage, cirrhosis and cancer. As modern lifestyles change, with alcoholism and cancer becoming more promi...