Sample

IC₅₀ value (mg/ml)

Raw RKB

0.0210 ± 0.0031^a

Control

0.0228 ± 0.0063^ab

10% RKB

0.0227 ± 0.0015^abc

20% RKB

0.0221 ± 0.0045^bc

30% RKB

0.0215 ± 0.0054^c