title: The loops and ultrastructure of the nucleolus of Ipheion uniflorum.
mesh_terms: D002466:Cell Nucleolus; D006652:Histological Techniques; D008854:Microscopy, Electron; D008858:Microscopy, Phase-Contrast; D059828:Plant Cells; D013501:Surface-Active Agents
chemical_list: D013501:Surface-Active Agents