title: Isolation of amphibian ovarian follicles by fractional centrifugation.
mesh_terms: D000818:Animals; D001001:Anura; D002499:Centrifugation, Density Gradient / Q000379:methods*; D005260:Female; D009865:Oocytes / Q000648:ultrastructure; D006080:Ovarian Follicle / Q000033:anatomy & histology*; D011898:Ranidae; D013045:Species Specificity; D014319:Triturus