Granulomatous inflammation during Heligmosomoides polygyrus primary infections in FVB mice.

Host responses to primary infections with Heligmosomoides polygyrus were studied in fast responding FVB mice (H-2(q)). Pathological changes in the intestinal mucosa, mesenteric lymph nodes and spleen were examined. Features of the fast response were typical: low effectiveness of infection and limiting of parasite survival and egg production, with worm expulsion occurring about 60 days post-infection.

Longevity and aging of mice from lines divergently selected for body weight for over 90 generations.

We have analysed the differences between longevity and aging process in two lines of mice selected divergently for body weight. As a result of long-term selection, the mice from two lines varied significantly in body weight during their life span. The differences regarded maturation rate, the length of the life time, reproduction performance, and fertility.

Broiler chickens fusariotoxicosis - A histopathological study of lymphoid organs and testes.

The addition of fiveFusarium species, cultured on wheat grain, to the standart chicken diet DKA starter, caused atrophic changes in the thymus and testes, as observed in the microscopic picture of these organs. The degree of lesions were depended on theFusarium species and its amount added to the standart diet.