| 1 | Conclusion:The microscopic characteristics of Dioscorea nipponica can be identified. | |
| 2 | Result:The microscopic characteristics of rhizome, stem and leaf of Dioscorea nipponica were distinguished. | |
| 3 | Potato is a tropical American yam with small yellow- skinned edible tubers. | |
| 4 | Conclusions Compounds 4 and 6 were obtained from Dioscorea genus for the first time. | |
| 5 | RESULTS Diosgenin inhibited A375-S2 cell growth in a time- and a dose-dependent manners. |