Table 2.

The viability of concentrated Serratia marcescens WW4 when co-cultured in the presence and absence of Pseudomonas aeruginosa WW5 in BM medium

	Viability (mean ± standard error) of WW4 cells (%)
Initial OD600 of WW4	Without WW5	With WW5	P
0.1	52.13 ± 0.34	54.46 ± 0.15	ns
0.2	10.64 ± 0.03	23.01 ± 0.02	ns
0.3	0.08 ± 0.00	11.82 ± 0.02	**
0.4	0.01 ± 0.00	9.95 ± 0.05	*
0.5	0.00 ± 0.00	0.99 ± 0.01	*
0.6	0.00 ± 0.00	0.35 ± 0.00	*

Significant differences (two-tail t-test, *P < 0.05 and **P < 0.001) are indicated for the viability of concentrated Serratia marcescens WW4 growing in the presence and absence of Pseudomonas aeruginosa WW5 in BM medium after 24 h.

ns, not significant.