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481487
Caption: The human lymphatic system, showing the lymphatic vessels and lymphoid organs.
Artist: Encyclopaedia Britannica
Release: Not Applicable
File Size: 9.56 MB
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481328
Caption: The lymphatic system of the head and neck helps defend against infection by supplying disease-fighting cells called lymphocytes.
Artist: Encyclopaedia Britannica
Release: Not Applicable
File Size: 16.33 MB