Anisotropic crystalline microstructures in dendritic arborizations of dried mid-cycle cervical mucus: surface morphology and crystallographic study.

Studies using scanning electron microscopic techniques permitted characterization of the nature and structure of the anisotropic elements present in dried preparations of mid-cycle cervical mucus. Sodium and potassium sulphates were located in the dehydrated matrix either isolated or bound to the dendrites. Depending on crystallization conditions, they appeared as well-formed individual crystals or as spherulites.