Please confirm that you are not located inside the Russian Federation
The link you have selected will take you to a third-party website. We do not control or have responsibility for the content of any third-party site.
This site complies with the HONcode standard for trustworthy health information: verify here.
This man with non-Hodgkin lymphoma has swollen lymph nodes on the right side of his neck.
DR P. MARAZZI/SCIENCE PHOTO LIBRARY