Table 3: Frequency of PER-1, SHV-1 and AMPC genes in isolates of P. aeruginosa isolated from clinical samples.

Lung secretions	Eye	Wound	Urine	Burn	Gene
13%	7%	18%	31%	18%	PER-1
11%	11%	12%	23%	17%	SHV-1
42%	7%	12%	67%	53%	AMPC
8%	0%	2%	4%	4%	PER-1 and SHV-1
12%	0%	3%	5%	12%	PER-1 and AMPC
7%	0%	3%	6%	15%	SHV-1 and AMPC
0%	0%	0%	0%	0%	PER-1 and SHV-1 and AMPC