| Type | MGI:General | Description | at 4 weeks of age colitis characterized by multifocal and coalescing mixed mucosal and submucosal infiltration of plasma cells, lymphocytes, histiocytes, and eosinophils is seen at the earliest stages, colits affects segments of the cecum and ascending and descending colon colitis occurs with equal severity when mice are housed in either specific pathogen free or conventional conditions |
