Fig. 4.

The microscopic images of co-cultured activated T cells with the M1 (a), M2a (b), M2c (c), MEM-D (d), MEM-ID (e), US-M (f) and MSCs (g). The microscopic images of activated PBMCs (h) and unstimulated PBMCs (i). The activated T cells (orange colored) have accumulated on the surface of macrophage cells, however these accumulations were detected as more dense at M2a and MEM-D co-culture groups compared with the US-M, M1 and M2c co-culture groups.