Day 239 (10q21.3-10q22.2): Nodal, telling left from right

back half template

Day 239 has 91 protein-coding genes (browser view), including NODAL (nodal growth differentiation factor).

Nodal signalling is the main system that breaks the body’s symmetry to set up the heart on the left and liver on the right side of the body. In snails, the gene sets up the direction of the shell’s twist.

Click here to see all 8362339 letters of Day 239 with NODAL underlined.

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