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Figure 1
Olfactory receptor genes are expressed throughout the body of zebrafish larvae. (A) Schematic of a lateral view of zebrafish larva illustrating different organs. (B) Lateral views of 6-day-old larvae processed by whole mount in-situ hybridization showing expression of 36 olfactory receptor genes throughout the head and body. Panels are ordered in numerical order of the gene names, except for or103-4 and or137-9, which were not found in the RNA-seq data and placed at the end. The head (bracket), pharynx (arrow), pancreas (asterisk) and trunk (purple line) are indicated. Scale bar = 200 μm. (C) Summary of olfactory receptor gene expression classified into categories (1) little/no expression in the head (blue), (2) expression in the head and trunk (green), (3) strong expression in the head (red).