Naris closure induces higher expression levels in the closed side for most OR genes expressed in the lateroventral zone 4.

Log2 ratio (x/o), the expression level ratio between the closed (x) and open (o) side, and the p value were obtained from the microarray study [19]. Pattern 1 (similar in both sides) is in regular script and Pattern 3 (closed>open) in bold. The OR genes are sorted based on the log2 ratio and only significant changes (pbold.