Whole mount in situ hybridization for raptor and rictor shows a similar pattern up to 34 hpf, after which the patterns diverge. Both genes are expressed in the head and the endoderm earlier, then raptor is selectively upregulated in the digestive organs at 48 and 72 hpf. Raptor then declines at 96 hpf. Rictor remains expressed in the head, but is not expressed later in the digestive tract. Original magnification 40x (all panels). Abbreviations: e, endoderm; L, liver; p, pancreas; g, gut. Dashed lines indicate the position of the digestive organs.