title: [Test of the vitality and infectiousness of the beef tapeworm (Cysticercus bovis)].
abstract: The vitality and infectiosity of Cysticercus bovis can be determined by means of a relatively simple in vitro method. Mobility and evagination are 2 parameters for estimating vitality as well as infectiosity. The mobility-evagination-relationship (MER) is an excellent basis for investigating the mobility over 20 h, because 2 parameters are involved. Of special interest was the fact that the first part of MER (after 1 h) is the period for the short-time-test (control of vitality), and the second part of MER (after 18 to 20 h) is the period for the long-time-test (control of infectiosity). Mobility and evagination of metacestodes were tested in activator solution (100 ml physiological saline + 6 ml fresh swine bile) at a temperature of 38 degrees C and a pH of 7.0. This in vitro method may be useful in determining the vitality of fresh and older Cysticercus bovis and of those exposed to smoking.
mesh_terms: D000818:Animals; D001646:Bile / Q000469:parasitology; D003552:Cysticercus / Q000472:pathogenicity / Q000502:physiology*; D006863:Hydrogen-Ion Concentration; D008722:Methods; D012965:Sodium Chloride / Q000494:pharmacology; D013552:Swine; D013621:Taenia / Q000502:physiology*
chemical_list: D012965:Sodium Chloride
vernacular_title: Die Prüfung der Vitalität und Infektionsfähigkeit der Rinderfinne (Cysticercus bovis).