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Lymphatic System

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Lymphatic System
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Vocabulary

antigen

antigen

Molecule that the immune system identifies as foreign and responds to by forming antibodies.
B cell

B cell

Type of lymphocyte that fights infections by forming antibodies.
immune response

immune response

Specific defense against a particular pathogen.
lymph

lymph

Fluid that leaks out of capillaries into spaces between cells; circulates in the vessels of the lymphatic system.
lymph node

lymph node

Small structures located on lymphatic vessels where pathogens are filtered from lymph and destroyed by lymphocytes.
lymphatic system

lymphatic system

System of the body consisting of organs, vessels, nodes, and lymph that produces lymphocytes and filters pathogens from body fluids.
lymphocyte

lymphocyte

Type of leukocyte that is a key cell in the immune response to a specific pathogen.
spleen

spleen

Organ that filters pathogens and worn out red blood cells from the blood
T cell

T cell

Type of lymphocyte involved in cell-mediated immunity in which cells infected with viruses are destroyed.
thymus

thymus

Gland that stores and matures lymphocytes.
tonsils

tonsils

Glands that trap pathogens, which are destroyed by lymphocytes.
bone marrow

bone marrow

Soft connective tissue in spongy bone that produces blood cells.

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