The effects of different concentrations of bacterial and fungal cell free culture media on the dry weight of the two tested
pathogenic bacterial species were presented in (Table 1). As appeared from the data, the dry weight of S. aureus and MRSA decreased with increasing the concentration of the bacterial filtrate and consequently the percentage of inhibition increased.Thus, 8% of the bacterial filtrate inhibited the growth of S.aureus and MRSA by 85.7% and 50%, respectively below the control level. Although the bacterial filtrate exerted strong antagonistic effect, MRSA showed more resistance than S.aureus to the inhibitory action of the bacterial filtrate. In contrast, the fungal cell free culture medium did not show any antagonistic action against the two pathogenic bacteria. Thus, the dry weights of the treated cultures were nearyl the same as the control weight at all concentrations of the fungal filtrate