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SLN detection and size development. (a) a blue-labeled lymphatic vessel (black arrow) was observed connecting the blue-labeled inguinal lymph node (white arrow) and tumor after peritumoral injection of Trypan blue solution; (b) the blue-labeled SLN was detected after the removal of skin. Scare bar=3mm. (c) Size development of T-SLNs and C-SLNs from day 0 to 35 measured by B-mode ultrasound imaging.
