Fig. 6From: Hepatocyte growth factor pretreatment boosts functional recovery after spinal cord injury through human iPSC-derived neural stem/progenitor cell transplantationSynaptic formation between host and grafted neurons. Immunoelectron microscopy image of a synaptic connection (arrowheads) from immunogold-labeled STEM121-positive graft neurons (yellow) to host neurons (light blue) in the TP and combination groups. Scale bars: 200Â nmBack to article page