title: Ultrastructure of giant plastids in a radiation induced mutant of Osmunda regalis.
mesh_terms: D002736:Chloroplasts / Q000528:radiation effects*; D003594:Cytoplasmic Granules / Q000032:analysis; D006651:Histocytochemistry; D008853:Microscopy; D009154:Mutation / Q000528:radiation effects*; D059828:Plant Cells; D011830:Radiation Effects; D013213:Starch / Q000302:isolation & purification
chemical_list: D013213:Starch