Fig. 5
From: Morphine suppresses the immune function of lung cancer by up-regulating MAEL expression
Morphine decreases LDH release and the percentage of CD8+ T cells, increased the ratio of CD4+/CD8+ T cells, and promoted the tumor weight. A The LDH release was detected using a LDH kit. B-D The numbers of CD4+ T and CD8+ T cells, and the ratio of CD4+/CD8+ T cells in control and morphine groups. E The picture of the tumor and weight of the tumor. *P < 0.05, **P < 0.01 versus control