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Detection of sentinel lymph node using NIR QDs in a mouse model. NIR QDs injected intradermally into the foot pad of a mouse migrate to the sentinel lymph node 5 min post injection. (A) Colour video image; (B) NIR fluorescence image; isosulphan blue dye colocalised to the same node (indicated by the arrows). Reprinted by permission from Macmillan Publishers Ltd: Nature Biotechnology (21), copyright 2004.
