Table 2.

Proportion of significantly changed genes by functional category.

Gene Ontology (GO)	Observed %	Expected %	p value
Extracellular region (5576)	16.3	5.3	0.00698
Extracellular matrix (31012)	13.95	2.4	0.000503
Intermediate filament cytoskeleton (45111)	6.977	0.53	0.00197
Intermediate filament (5882)	6.977	0.58	0.00197
Muscle development (7517)	6.977	1.16	0.0135
Transporter activity (5215)	23.26	12.06	0.0291
Structural molecule activity (5198)	20.93	5.424	0.000414
Extracellular matrix structural constituents (5210)	9.302	0.675	0.000198
Oxidoreductase activity acting on paired donors (16705)	6.977	0.631	0.0025

Note: This refers to primary pterygium versus control. Only functional categories which represent at least 5% of the significantly changed genes are shown. The numbers in the brackets represent the GO category ID.