title: Dual effect of negative staining in thin crystal sheets: demonstration of surface and deep detail.
mesh_terms: D000818:Animals; D003461:Crystallography; D004527:Egg Proteins / Q000032:analysis; D005260:Female; D008854:Microscopy, Electron; D010063:Ovum / Q000648:ultrastructure*; D013194:Staining and Labeling / Q000379:methods*; D014982:Xenopus laevis
chemical_list: D004527:Egg Proteins