[Anti-tumor effect of

To explore the anti-tumor effect of 17XL strains ofB16F10 tumor cells were axillarilly injected into the right flank of 20 C57BL/6 mice to establish tumor-bearing mouse models. The next day, the mice were randomly divided into a P.y infection group and control group, 10 mice each group. Each mouse of the P.y infection group was intraperitoneally injected with 1×10The time of tumor formation in the P.y infection group［ (11.30 ± 0.21) d］was significantly later than that in the control group ［ (10.40 ± 0.22) d］ (The P.y infection can delay the occurrence of tumor and inhibit the growth of melanoma.