Table 3.

Histologic scoring of cecum and colon of experimentally-infected mice.

Scorea	Epithelial hyperplasia	PMN	Mononuclear inflammatory cellsb	Adenitis	MALT	Serositis
0	Absent	Absent	Absent	Absent	Absent	Absent
1	Detectable	Mild and focal or multifocal	Mild and focal or multifocal	Mild and focal or multifocal	Present	Present
2	Moderate	Moderate and multifocal or widespread	Moderate and multifocal or widespread	Moderate and multifocal or widespread	Hyperplastic
3	Marked	Severe, and widespread	Severe, and widespread	Severe, and widespread

^aTotal score is the score for each criterion added together (Max score =15)

^bLymphocytes, plasma cells, and histiocytes were scored together as mononuclear inflammatory cells