title: Scanning electron microscopy of Drosophila melanogaster embryogenesis. III. Formation of the head and caudal segments.
mesh_terms: D001003:Anal Canal / Q000196:embryology; D000818:Animals; D004331:Drosophila melanogaster / Q000196:embryology*; D005855:Germ Layers / Q000648:ultrastructure*; D006257:Head / Q000196:embryology; D008855:Microscopy, Electron, Scanning; D013997:Time Factors