[Blood of healthy bulls and those with listeriosis with regard to the enzymatic differences in the lymphocytes].

A relationship between esterase positive and esterase negative lymphocytes in peripheral blood of a homogenous group of one-year old healthy bulls of NCB breed was found. Average values of other hematologic indices in these animals were also determined. Then the same indices were examined in bulls experimentally infected with Listeria monocytogenes and compared with the data for healthy animals. The following representative average values were found: erythrocytes 7,2 mill/mm3, leukocytes 8,6 thous./mm3. The proportional composition of leukocytes is: neutrophils - 33,9; eosinophils - 2,9; basophils - 0,8; monocytes - 5,5; lymphocytes - 56,9 including esterase positive cells - 74,7% and esterase negative cells - 25,3% in it. Statistically significant differences concerned the proportional composition of esterase positive and esterase negative lymphocytes, as well as the quantity of monocytes, basophils, eosinophils and that of erythrocytes and leukocytes.