Fig. 2

The anti-melanoma effects of MNZQ, herb extracts and active ingredients on B16 cells assessed by CCK8. a: P. harmala: 1 mg/mL; F. vulgare: 4 mg/mL; P. anisum: 10 mg/mL; N. glandulifera: 2 mg/mL; M. chamomilla: 4 mg/mL; C. intybus (seed): 10 mg/mL; C. intybus (Root): 10 mg/mL; A. graveolens: 4 mg/mL; D. moldavica: 1 mg/mL; G. uralensis: 4 mg/mL; C. caesius: 4 mg/mL; O. basilicum: 5 mg/mL; A. rosea: 10 mg/mL; MNZQ: 60 mg/mL; b: active ingredients of harmine, harmaline, harmane, and harmol with concentration ranging from 50 to 200 μM. Results are expressed as the mean ± SD (n = 3). ^* P < 0.05, ^*** P < 0.001 vs. the control group