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

Table 2 The number of zebrafish embryos with migrating MDA-MB-231 (RFP) cells transfected with let-7a, CCR7 siRNA and scRNA, respectively

Transfection	Embryos containing migrating cells/Total embryos
	0 (day)	1 (day)	3 (days)
Control	0/25	7/25 (28%)	9/23 (39%)
RFP scRNA	0/25	8/24 (33%)	9/21 (43%)
RFP let-7a	0/27	0/26 (0%)	0/24 (0%)
RFP CCR7 siRNA	0/24	0/24 (0%)	0/21 (0%)

ISSN: 1465-542X