Immunostaining results for Prelp, Type III collagen, and Fibromodulin.

Prelp =  proline-arginine-rich end leucine-rich repeat protein. Sections from 3 DMM and 4 sham control animals at 16 weeks after surgery were graded on a scale from no immunopositivity (−) to marked immunopositivity (++++). The results presented are the consensus grades from all animals evaluated. The degenerate/fibrillated cartilage was only present in the DMM animals.