Efficacy of anti-programmed cell death protein 1 monoclonal antibody combined with bevacizumab and/or Pseudomonas aeruginosa injection in transplanted tumor of mouse forestomach carcinoma cell gastric cancer in mice and its mechanism in regulating tumor immune microenvironment

抗程序性细胞死亡蛋白1单克隆抗体联合贝伐单抗和/或铜绿假单胞菌注射液对小鼠前胃癌细胞胃癌移植瘤的疗效及调节肿瘤免疫微环境的机制