الفهرس 
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Abstract
A total of 414 samples from different systems of the body of cattle were examined
for mycoplasma isolation. This study revealed 35% isolation of mycoplasma
from apparently healthy animals, 54% from diseased animals with a total percent
from 45.2%. Identification of the isolated mycoplasma revealed more than one
species of mycoplama; the most important isolates was M. bovis in 35.3% from
the: total isolates, M. bovigenitalium 17 % and M. arginini 11. 8%. An
. immunological study for estimation the concentration of nitric oxide, lysozyme
,
and catalase secreted from neutrophils in response to field strains of M. bovis and
M, bovigenitalium that isolated from diseased and apparently healthy cattle were
described.