title: Structure of microtubules: a study of freeze-etched and negatively stained microtubules from the ovaries of Notonecta.
mesh_terms: D005260:Female; D005613:Freeze Etching; D007313:Insecta / Q000033:anatomy & histology*; D008870:Microtubules; D010053:Ovary / Q000166:cytology*; D013194:Staining and Labeling