Fig. 5.

Electron micrographs of FPR2 immunostained sections from the prefrontal cortex. a, b Immunostaining is mostly present in axon pre-terminals (PrT) that did not form synapses with postsynaptic structures. c Occasional axon terminals (AT) are observed to form asymmetrical, putatively glutamatergic synapses (S) with unlabelled dendrites (DE). d Occasional labelled dendrites (DE) are also found, that formed asymmetrical synapses (S) with unlabelled axon terminals (AT). Scale: a, b, c = 50 nm, e = 100 nm