highly significantP<0.01
Results In the isolated cell cultures, the values of correlation coefficient showed a highly significant positive correlation (r=0.754, P<0.01) between the number of the cellular proliferation for both nTregs and CD4 + T cells with or without M protein stimulation, which was recorded by immunoflouresence technique on days 0, 3, 5 and 7 of incubation ( figure 1 ).