Cellular colocalization of the chondrocyte-derived tomato marker and the osteoblast-specific 2.3Col1-GFP marker in femurs of tamoxifen treated <i>Agc1-CreERT2;2.3Col1-GFP;ROSA-tdTomato</i> triple transgenic mice.

<p>The femur fluorescence images of postnatal day 1 <i>Agc1-CreERT2;2.3Col1-GFP;ROSA-tdTomato</i> mouse treated with tamoxifen at E14.5. Panel a: blue and green channels; Panel b: blue and red channels; Panel c: blue, red and green channels; The lower panels indicated by small squares represent magnified images of cells from top panels. Red square: red and blue channels; Green square: green and blue channels; Yellow square: red, green and blue channels; The green arrows indicate the Tomato⁻EGFP⁺ cells. The yellow arrows indicate the Tomato⁺EGFP⁺ cells. Only EGFP⁺ cells no Tomato⁺ cells were present in the perichondrium (between white arrows) and periosteum (between white arrow heads).