MMP9 and small cell lung carcinoma: Under the MCPcounter algorithm, whether in SCLC (George et al.)or SCLC (Jiang et al.), we found that the TIME when MMP9-High was higher than MMP9-Low was significantly infiltrated with t-cells, cytoxic lymphocytes, B-cells, NK cells, and dense cells (DCS) (Figures 4A,B; all p < 0.05).