
	3D Medical Animations Close This information is provided by an independent source. Merck & Co. does not endorse and is not responsible for the accuracy of the content, or for the practices or standards of non-Merck sources. This information provided is not intended to be a substitute for professional medical advice. A licensed healthcare professional should be consulted for diagnosis and treatment of any and all medical conditions. The manufacturer of a product generally has the most complete information about that product. How to use How to use The world's largest library of 3D medical animations developed and copyrighted by Blausen Medical Communications. The Human Atlas figures rotating model, labeled slides, and printable text in addition to animated videos. Shows a video of the selected health topic. Controls play, pause, and restart of the video. Shows a summary of the selected health topic. Controls to scroll the text. Shows a 3 D model of the video. Controls to rotate the model. Shows slides from the video. Controls to change slides.

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This information is provided by an independent source. Merck & Co., Inc. is not responsible for this content. Please discuss any and all treatment options with your healthcare professional. The manufacturer of a product generally has the most complete information about that product.

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lymphocyte (lim´fo-sīt) any of the mononuclear nonphagocytic leukocytes found in the blood, lymph, and lymphoid tissues; they comprise the body's immunocytes and their precursors. They are divided into two classes, B lymphocytes and T lymphocytes, responsible respectively for humoral immunity and cellular immunity. Most are small lymphocytes that have a round or slightly indented, mottled nucleus filling almost the entire cell. When activated by contact with antigen, small lymphocytes begin to expand and change; their cytoplasm enlarges and the nucleus becomes less mottled; they are then referred to as large lymphocytes or lymphoblasts. These cells then multiply and become a variety of specialized cells (memory cells, plasma cells, helper cells, cytotoxic cells, and suppressor cells). adj., lymphocyt´ic., adj.

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