Inhibitory and Acceleratory Effects of Inonotus obliquus on Tyrosinase Activity and Melanin Formation in B16 Melanoma Cells

Figure 2

Chemical structure of betulin (Fa-a), trametenolic acid (Fa-b), inotodiol (Fb-a), lanoserol (Fb-b), nicotinie acid (Fc-a), and 3,22,25-trihydroxy-lanosta-8-ene (Fd-a).