In vitro interaction of Aeromonas salmonicida bacteria and head kidney leucocytes of carp. Cyprinus carpio L
1989
Soevenyi, J.F. (Hungarian Academy of Sciences, Budapest (Hungary)) | Kusuda, R.
To study efficiency of phagocytic function to eliminated Aeromonas salmonicida subsp. salmonicida bacteria, changes of the bacterial count and leucocyte count in A. salmonicida and carp head kidney cell mixtures were monitored during a 170 min incubation period. A virulent aggregating (AB) strain and its non-aggregating (NAB) derivative were used in the tests. Macrophages, neutrophils and a few lymphocyte-line cells phagocytosed. The phagocytosing neutrophils wee dominantly young cell forms. The number of cell associated bacteria increased in about half of the test samples and a negligible decrease occurred in the rest of them. The mean cell associated bacterial counts of AB and NAB bacteria did not differ significantly. In the samples, containing bacteria, number of the leucocytes decreased significantly. Destruction of leucocytes is considered to primarily characterize the examined in vitro process
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