Fig. 1

The appearance and functionality of testicular tissue allografted into the abdomen of a recipient. a–c Representative images of a recipient male that received testicular tissue derived from an actb-GFP strain male. Bright field image of the intact abdomen a, bright field image of the incised abdomen b, and fluorescence image of the incised abdomen c; transplanted location is encircled by a dotted line in panel b; scale bar, 1 mm. d, e Representative images of the eggs fertilized by the recipient male that had been transplanted with testicular tissue of an actb-GFP strain male. Bright field image d and fluorescence image e; scale bar, 1 mm