Figure 5
Knockdown of MMP-9 decreased the metastatic distance and number of CAL-27 cells in the zebrafish xenograft model. A red fluorescent cluster indicated a tumor mass, and the foci marked by white arrows indicated the metastatic tumor cells or lesions that have escaped from the yolk sac. (a, b) The bright-field and fluorescent pictures of whole-body, head, distal tail regions of zebrafish injected with CAL-27/LVRU6MP and CAL-27/MMP-9/shRNA cells at 3 dpi (