title: Preservation of Schistosoma mansoni eggs and of infected livers as a source of eggs for the circumoval precipitin test.
abstract: Eggs of Schistosoma mansoni and livers with numerous granulomata were preserved at -70 C in 1.7% salt solution plus an equal volume of water-soluble jelly. The eggs were suitable for circumoval tests after at least 1 yr of preservation and the livers supplied adequate eggs for the tests for at least 6 mo after preservation. This procedure may be useful where such storage facilities are available, and the COP test is used for diagnosis.
mesh_terms: D000818:Animals; D003080:Cold Temperature; D005260:Female; D005615:Freezing; D008099:Liver / Q000469:parasitology*; D010063:Ovum / Q000276:immunology; D011233:Precipitin Tests; D011309:Preservation, Biological; D012550:Schistosoma mansoni / Q000502:physiology*; D012552:Schistosomiasis / Q000175:diagnosis*; D013997:Time Factors