Fig. 2.

Photomicrograph of fluorescence immunohistochemistry 3 weeks after GFP-BMSC transplantation, showing that the transplanted BMSC survived on the spinal cord slice (green, A) and promoted the SMI32-positive neurite outgrowth from the host neurons (red, B). Their merged image is shown in panel C. White box (A) indicates field-of-view for panels D–F. Confocal laser microscopy shows that the extended neurites (red, E) get tangled around the BMSC that migrated into the slice like a “yoyo” (green, D). Their merged image is shown in panel F.¹¹⁾ BMSC: bone marrow stromal cell.