Department;
of;
Pathology,;
The;
First;
Affiliated;
Hospital;
of;
Dalian;
Medical;
University,;
Dalian;
116011,;
China;
Department;
of;
Toxicology,;
Liaoning;
Center;
for;
Disease;
Control;
and;
Prevention,;
Shenyang;
110005,;
China;
Department;
of;
Medical;
Affairs,;
Liaoning;
Cancer;
Hospital;
&;
Institute,;
Shenyang;
110015,;
China;
三氧化二砷; 胃癌细胞; SGC7901/ADR; 耐药性; 作用机制;