TABLE 3.

Effect of silver on biofilm formation on stainless steel surfaces

Day	Mean no. of CFU/cm2 ± SDa
	Silver treatment	Control
1	3.7 × 10−2 ± 1.7 × 10−2	7.7 × 10−2 ± 1.5 × 10−2
7	1.1 × 102 ± 5.6 × 101	6.1 × 103 ± 8.4 × 103
10	1.5 × 102 ± 8.1 × 101	1.0 × 104 ± 1.4 × 104
23	2.9 × 102 ± 3.2 × 102	9.1 × 101 ± 5.1 × 101
29	2.5 × 104 ±3.9 × 104	1.7 × 104 ± 2.4 × 104
36	6.1 × 103 ± 8.3 × 103	1.5 × 104 ± 2.0 × 104

^aThe results shown are means of triplicate samples.