Table 3.

Staining intensity to specific antibodies in moderate OA, severe OA and control.

Antibodies	Diagnosis
	Moderate OA	Severe OA	Control
iNOS	+++	++	+
BCL-2	++	+++	++
MMP-9	+++	+++	+

Three pluses indicate strong reactivity; two pluses indicate moderate reactivity; one plus indicates mild reactivity; minus indicates no reactivity.