CCL3 and plasma cell myeloma: Further ELISA analysis showed that the secreted level of CCL3 significantly increased in the bone marrow plasma cells of myeloma patients and in the MM-5TGM1 mouse model (human plasma: 779.2 ± 28.97 pg/mL vs. 83.52 ± 5.31 pg/mL, p < 0.0001; mouse serum: 13.03 ± 1.94 pg/mL vs. 5.33 ± 1.46 pg/mL, p = 0.0317; mouse plasma: 34.03 ± 1.32 pg/mL vs. 15.86 ± 3.88 pg/mL, p = 0.0114; Fig. 6B,C).