Nerve Terminals from the Host Make Synaptic Contact with the Implanted hNSCs
(A) Unlabeled nerve terminal (U-NT), containing synaptic vesicles, making a synaptic-like contact (arrow) with an underlying labeled (SC121) hNSC dendrite (L-DEND). The connection may be symmetrical.
(B) Unlabeled nerve terminal (U-NT), containing synaptic vesicles, making an asymmetrical synaptic contact (arrow) with an underlying labeled (SC121) hNSC dendrite (L-DEND). This asymmetrical contact suggests an excitatory synaptic contact.