Number of Lymph Nodes in Human Body

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How many lymph nodes are there in the human body?

Between 500 and 700.

The International Commission on Radiological Protection (ICRP) estimates the number of lymph nodes in the human body is between 500 and 700 (data published on the book “ICRP Publication 23”, in 1975). These lymphatic organs are found mostly in the head, neck and intestine regions, and are usually less than 2.5 cm long.

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