Research Article

Intra-Articular AAV9 α-L-Iduronidase Gene Replacement in the Canine Model of Mucopolysaccharidosis Type I

Figure 10

Cartilage photomicrographs and chondrocyte lysosomal storage scoring in the high-dose +2 w animal. At baseline, chondrocytes demonstrate foamy lysosomal storage (red arrows, scored 1). At necropsy, AAV9-eGFP-treated chondrocytes had increased lysosomal storage (scored 2 or 3), while AAV9-IDUA-treated chondrocytes demonstrated normal-appearing basophilic cytoplasm (scored 0). Control chondrocytes included for comparison. μM.