TABLE 1.

APase specific activities under different conditions of planktonic and biofilm P. aeruginosa organisms

Bacteria	Conditionsa	Enzyme sp act (ΔA410 mg of protein−1 min−1)b	Cell densityc
Planktonic	HP for 8 h	0	1.52 × 109
	LP for 8 h	59.19	2.6 × 108
Biofilm	LP + air for 8 h	3.95 ± 0.56	4.26 ± 0.96 × 109
	LP + pure N2 for 8 h	0.13 ± 0.079	4.43 ± 1.43 × 109
	LP + pure O2 for 8 h	7.49 ± 0.83	4.72 ± 0.53 × 109

^aHP, growth in high-phosphate medium; LP, growth in low-phosphate medium. 

^bΔA₄₁₀, change in A₄₁₀. 

^cCell densities are expressed as CFU per milliliter of planktonic bacteria and CFU per square centimeter of biofilm.