title: Protosynapses in the human embryonic and fetal spinal cord.
mesh_terms: D005260:Female; D005333:Fetus / Q000648:ultrastructure*; D006801:Humans; D011247:Pregnancy; D013116:Spinal Cord / Q000196:embryology / Q000648:ultrastructure*; D013569:Synapses / Q000648:ultrastructure*