On the nature of "fibrils" and tubules in developing enamel of the opossum, Didelphis marsupialis.
D000565:Ameloblasts; D000566:Amelogenesis; D000818:Animals; D003593:Cytoplasm; D008854:Microscopy, Electron; D009804:Odontoblasts; D009893:Opossums; D014083:Tooth Germ / Q000166:cytology*