Development of neural elements in human embryos of four to seven weeks gestation.
D001369:Axons; D001921:Brain / Q000196:embryology*; D002454:Cell Differentiation; D002467:Cell Nucleus; D005724:Ganglia / Q000196:embryology; D005865:Gestational Age; D006801:Humans; D009454:Neurofibrils; D010784:Photomicrography; D013116:Spinal Cord / Q000196:embryology*; D013194:Staining and Labeling