Significance of platelet activating factor receptor expression in pancreatic tissues of rats with severe acute pancreatitis and effects of BN52021

Table 1 Scoring standard of pathological changes in rat pancreatic tissues with SAP

Pathological	Pathological	Scores
grading	change
Edema	Inter-lobule local edema, widened pleura	1
	Inter-lobule diffuse edema, widened intra-lobule
	clearance	2
	Increased intra-lobule clearance, alveolus swollen,
	and separated	3
Inflammatory	White cells < 20/visual field under high-power
	microscope	1
	White cells 20-50/visual field under
	high-power microscope	2
	White cells > 30/visual field under high-power
	microscope, or micro-abscess occurs	3
Hemorrhage	Parenchymal hemorrhage < 20%	1
	Parenchymal hemorrhage 20%-50%	2
	Parenchymal hemorrhage > 50%	3
Necrosis	Necrosis area < 20%	1
	Necrosis area 20%-50%	2
	Necrosis area > 50%	3