Table 1. CI values of bufalin and MK2206 in MM cells.

Cell line	Bufalin (nM)	MK2206 (μM)	Combination index
NCI-H929	1.5	0.75	0.63151±0.17898
	3	1.5	0.35813±0.16165
	6	3	0.62726±0.15774
	12	6	0.39784±0.14055
	24	12	0.68673±0.11926
U266	1.5	0.75	0.74681±0.12682
	3	1.5	0.78902±0.05403
	6	3	0.63393±0.06415
	12	6	0.48425±0.05617
	24	12	0.54466±0.13783
RPMI8226	1.5	0.75	0.98908±0.23793
	3	1.5	0.54602±0.09387
	6	3	0.61654±0.11481
	12	6	0.69458±0.03525
	24	12	0.26182±0.08178
LP-1	1.5	0.75	0.97739±0.25743
	3	1.5	0.57839±0.12488
	6	3	0.57851±0.08621
	12	6	0.60430±0.05833
	24	12	0.54849±0.20227
H929R	6	3	0.20565±0.08265
	12	6	0.28958±0.06326
	24	12	0.46241±0.20279
U266R	6	3	0.20333±0.09171
	12	6	0.33709±0.09838
	24	12	0.59512±0.23565