. 2021 Mar 9;6(11):7487–7498. doi: 10.1021/acsomega.0c06016

Table 2. Optical Density of Formazan Solution (OD, MTT Assay) during 1–21 days of MG-63 Cell Cultivation on DMEM-Treated OCP Granules (0–28 days).

	OD of formazan solution
group number (soaking term, days)	1 day	4 days	7 days	11 days	14 days	18 days	21 days
cell control	0.151 ± 0.001	0.652 ± 0.004	1.210 ± 0.010	1.547 ± 0.020	1.594 ± 0.013	1.511 ± 0.011	1.884 ± 0.011
I (0)	0.133 ± 0.001*	0.280 ± 0.004*	0.468 ± 0.005*	1.022 ± 0.006*	1.267 ± 0.002*	1.447 ± 0.001*	1.779 ± 0.005*
II (1)	0.154 ± 0.001^,*	0.439 ± 0.002^,*	0.881 ± 0.005^,*	1.482 ± 0.003^,*	1.632 ± 0.004**	1.515 ± 0.005**	1.870 ± 0.006**
III (3)	0.163 ± 0.001^,*	0.417 ± 0.002^,*	0.857 ± 0.003^,*	1.632 ± 0.004^,*	1.656 ± 0.007^,*	1.490 ± 0.011**	2.000 ± 0.007^,*
IV (7)	0.151 ± 0.001**	0.478 ± 0.001^,*	0.889 ± 0.001^,*	1.592 ± 0.008**	1.459 ± 0.013^,*	1.559 ± 0.006^,*	2.192 ± 0.007^,*
V (14)	0.142 ± 0.001^,*	0.487 ± 0.005^,*	0.888 ± 0.006^,*	1.543 ± 0.003**	1.753 ± 0.007^,*	1.540 ± 0.004**	2.243 ± 0.012^,*
VI (21)	0.145 ± 0.001*	0.434 ± 0.001^,*	0.884 ± 0.001^,*	1.521 ± 0.009**	1.710 ± 0.007^,*	1.580 ± 0.003^,*	2.222 ± 0.005^,*
VII (28)	0.148 ± 0.001^,*	0.407 ± 0.003^,*	0.819 ± 0.005^,*	1.376 ± 0.005^,*	1.700 ± 0.004^,*	1.613 ± 0.005^,*	2.113 ± 0.010^,*