Figure 1. Phenotypes of MMc in male normal human pancreases, the X chromosome is stained as red dot, the Y chromosome is stained as green dot; an MMc is visualized as a nucleus containing two red dots; male cells contain a red and a green dot in their nuclei; panel of images showing an MMc was positive for a) insulin (green, cytoplasmic staining) in an 11 month-old pancreas; b) glucagon (red, cytoplasmic staining) in a 13 year-old pancreas; c) somatostatin (red, cytoplasmic staining) in a 36–40 week fetal pancreas; d) GATA4 (green, nuclear staining) in a 36–40 week fetal pancreas, the upper right image shows the two X chromosomes captured in Spectrum Orange channel; e) cytokeratin 19 (green cytoplasmic staining) in a 36–40 week fetal pancreas; and f) CD34 (green cytoplasmic staining) in a 36–40 week fetal pancreas; nuclei were counterstained with DAPI; magnification 40×.