Figure 2.

Effects of UVB-irradiation and external triptolide application on sebaceous glands in hamsters. Auricles of hamsters were treated once a day with triptolide (3.1 nmol)/95% ethanol/5% glycerol (n=3) or vehicle (95% ethanol/5% glycerol; n=3) prior to UVB irradiation at 5.4 kJ/m². After seven days, the tissues were fixed and stained with oil red O. (A) Vehicle treatment. (B) UVB irradiation. (C) Triptolide treatment and UVB irradiation. Arrowheads indicate sebaceous glands. Bars, 100 µm. UVB, ultraviolet B.