Progressive remodeling of the XY body during meiotic prophase in dog spermatocytes. A) Pachytene spermatocyte spread nuclei stained for DAPI (blue), H3.1/2 (white, artificial color chosen to represent the infrared signal), CREST (red) and TEX12 (green). The different substages are indicated on top. B) Pachytene spermatocyte spread nucleus stained for DAPI (blue), H3.1/2 (red), SYCP3 (green). Single immunostainings are shown in grayscale.