MMP3 and myeloid sarcoma: Although there was no difference in the expression of MMP-3 between a lesion and its corresponding NAWM, MMP-3 expression was significantly higher in the NAWM of patients in the “B cell” group compared to the “T cell” group (p < 0.001) and non-MS controls (p < 0.001), but not to the “NI” group (Figure 1C).