To activate lymphocytes, bacteria must penetrate the epithelium of tonsils.
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Q81: The tonsils located just behind the openings
Q82: Epithelial cells within the thymus secrete hormones
Q83: Deep lymphatic collecting vessels of the abdominal
Q85: The spleen atrophies during adulthood.
Q92: Lymph transports fats absorbed from the small
Q92: Lymph capillaries are open-ended like drinking straws.
Q96: By secreting hormones, the thymus causes which
Q99: If lymphatic vessels are surgically removed, the
Q107: Congestion of the tonsils with bacteria results
Q109: The paired _ drain lymph from the
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