Fig. 4From: Conditional deletion of HDAC4 from collagen type 2α1-expressing cells increases angiogenesis in vivoTransfection efficiency of HDAC4 into isolated chondrocytes. a The transfection efficiency of various doses of GFP-HDAC4 DNA into isolated murine chondrocytes was examined with confocal laser scanning microscopy based on GFP expression. Nuclei are stained with Hoechst 33342 (Hoechst). b Approximately 300 cells from three independent experiments were scored. Data are expressed as mean ± SEMBack to article page