Figure 1

Inhibitory effect of NCTD on proliferation of GBC-SD cells in vitro . (A) Histomorphologic of GBC-SD cells under an inverted optic microscope (original magnification, ×200) at 24^th hr: predominantly shuttle-shape cells, with abundant cytoplasm and clear nuclei in control group; visible float or aggregation cells, with nuclear condensation and nuclear fragmentation in NCTD group (1/2 IC₅₀ NCTD). (B) The dose-response curves of NCTD effect on GBC-SD cells with the IC₅₀ value of 56.18 μg · ml⁻¹.