MicroRNA let-7a suppresses breast cancer cell migration and invasion through downregulation of C-C chemokine receptor type 7

Table 3 The number of migrated cells per tail vein of zebrafish embryos that had migrating MDA-MB-231 (RFP) cells transfected with let-7a, CCR7 siRNA and scRNA, respectively

Transfection	Cells in the tail vein/Total injected cells
	0 day	1 day	3 day
Control	0/150 (0)	4/150 (3%)	42/150 (28%)
RFP scRNA	0/150 (0)	5/150 (3%)	45/150 (30%)
RFP let-7a	0/150 (0)	0/150 (0)	0/150 (0)
RFP CCR7 siRNA	0/150 (0)	0/150 (0)	0/150 (0)

ISSN: 1465-542X