title: Structural changes associated with freezing of bovine embryos.
mesh_terms: D000818:Animals; D002417:Cattle; D003080:Cold Temperature; D004622:Embryo, Mammalian / Q000033:anatomy & histology* / Q000648:ultrastructure; D004707:Endoderm / Q000033:anatomy & histology / Q000648:ultrastructure; D005615:Freezing; D009924:Organ Culture Techniques; D013997:Time Factors