http://www.buffaloah.com/a/DCTNRY/t/trefoil.html Day 365 has 92 protein-coding genes (browser view) including three trefoil family genes such as TFF1.
Trefoil family genes are named after a shape common to the proteins they encode. These three genes encode proteins that are important in gastrointestinal secretions.
Click here to see all 7784997 letters of Day 365 with TFF1 underlined.