Detection
of apoptosis in A2780 ovarian cancer cells after treatment
with 1. (A–D) Control cells showing typical heterochromatin
(H) and euchromatin (E) distributions, mitochondria (M), nuclear pores
(NP), and rough endoplasmic reticulum (ER). (E–H) Cells exposed
to 1 μM 1 for 24 h, showing swollen mitochondria
(V), nuclear vacuoles (NV), and membrane blebbing (B). (I–L)
Cells exposed to 5 μM 1 for 24 h, showing abnormal
chromatin distributions and further vacuole formations.