FIGURE 5 DDR1 expression is correlated with immune in fi ltration in STAD. (A) Correlation of DDR1 expression with immune in fi ltration levels in DLBC and STAD via TIMER database. DLBC serves as a control group. (B) Kaplan – Meier plots of the relationship between patients ’ prognosis and immune cells in fi ltration in DLBC and STAD via TIMER database [blue line, low (bottom 50%); red line, high (top