Electron microgaphs of synapses (arrowheads)
formed by PHAL-labeled perirhinal (A) and neocortical (B)
axon terminals (PHAL-t) in the perirhinal cortex.
Cases depicted in panels A1 and B1 show asymmetric synapses
with dendritic spines. Cases depicted in A2 and B2 show
symmetric synapses with dendritic profiles. d, dendrite; s, spine.