Table 1. Experimental groups for the SKBr3 and MDA-MB-231 co-culture experiments.

Experimental Group	Portion of MDA-MB-231 Cells		Portion of SKBr3 Cells
	Plated	Observed	Plated	Observed
Group 1	0	0	1	1
Group 2	0.3	0.37	0.7	0.63
Group 3	0.5	0.60	0.5	0.40
Group 4	0.7	0.82	0.3	0.18
Group 5	1	1	0	0