MURINE ENCEPHALITOZOONOSIS AND KIDNEY LESIONS IN SOME SLOVAK LABORATORY-ANIMAL BREEDING CENTERS

One hundred and thirty-two mice from five laboratory colonies were ran domly examined for seropositivity to Encephalitozoon cuniculi and its relationship to the occurrence of kidney lesions was correlated. The i ndirect immunofluorescent antibody test was performed. The samples rea cted at dilutions between 1 : 64 and 1 : 2048, inclusive. Twenty mice were found to be seropositive in two colonies and the others in three colonies showed seronegative reactions. Histological changes were seen in 80 % of E. cuniculi-seropositive animals. The results show a corre lation between seropositivity and kidney lesions in infected animals.