Table 2 Colony morphology of P. aeruginosa laboratory strain PAO1 and clinical CF isolates upon LB agar plates.

Isolate	Pigmentation				Colony Size		Mucoidy status		Form		Optical Property	Autolysis	Surface Texture
Isolate	Brown	Green	White	Opaque	Small	Large	Mucoid	Non-mucoid	Circular	Irregular	Opaque	Autolysis	Rough	Smooth
PAO1		+				+		+	+		+	−		+
1			+	+		+		+	+		+	−		+
2				+		+		+	+		+	−		+
3			+			+		+	+		+	−		+
4	+	+				+	+		+		+	−		+
5		+				+		+	+		+	−		+
6		+				+		+	+		+	−		+
7			+			+		+	+		+	−		+
8	+					+		+	+		+	−		+

The production of four colony pigmentations were studied. Colonies were positive for mucoidy status if they exhibited a slimy appearance. Colony form assessed the basic shape of the colonies. Autolysis assessed whether the bacteria grew as colonies that were lysed in their centres, whilst margin determined the edge of the colonies.

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