An electron microscope study of the formation and structure of the periostracum of a gastropod, Littorina littorea.
D000818:Animals; D002462:Cell Membrane; D003594:Cytoplasmic Granules; D004721:Endoplasmic Reticulum; D006056:Golgi Apparatus; D008854:Microscopy, Electron; D008928:Mitochondria; D012908:Snails / Q000033:anatomy & histology*