At the 4th day , CD ( 3 ) , CD ( 4 ) and CD ( 4 ) / CD ( 8 ) increased significantly in the treatment group ( P < 0.05 ) while no changes in the control group ; the levels of CD ( 4 ) and CD ( 4 ) / CD ( 8 ) in the treatment group were also higher than those in the control group ( P < 0.05 ) .
