Table 4.

Measurements of nucleic acids released from S. aureus planktonic and biofilm cells after treatment with US, CA, and US plus CA.

Treatments	OD260
	S. aureus planktonic cells	S. aureus biofilm cells
Control	0.31 ± 0.022A	0.12 ± 0.022A
US	0.40 ± 0.005B	0.17 ± 0.012B
0.5% CA	0.57 ± 0.010C	0.23 ± 0.010C
1% CA	0.69 ± 0.005D	0.57 ± 0.001E
2% CA	1.42 ± 0.009F	0.68 ± 0.003F
US plus 0.5% CA	0.87 ± 0.005E	0.55 ± 0.002D
US plus 1% CA	1.56 ± 0.009G	0.88 ± 0.003G
US plus 2% CA	2.24 ± 0.043H	1.10 ± 0.030H

Different lower-case letters indicate significant differences among treatments (p < 0.05).