studies to explore the effect of bcs on immune system of human
volunteers using 1 g twice daily indicated enhanced immune
functions such as improving helper t cells to
suppressor t cells ratio as well as improving natural killer cell
activity (el-tahir et. al., 1993). dorucu et al. (2009) found that
serum proteins and total immunoglobulin levels were significantly
(p <0.05) higher than those of the control group in
rainbow trout fish. antibody titer against nd and ibd was reported
by al-beitawi et al. (2009) to be significantly enhanced
by bcs. however, some workers reported that bcs had no
significant effect on antibody titer against nd. however, there
was significantly increased lymphoid organ ratio (bursa and
thymus) with increasing bcs levels (
.
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