https://en.wikipedia.org/wiki/CA-125#/media/File:The_Structure_of_MUC16.jpeg Day 341 has 246 protein-coding genes (browser view) including MUC16 (mucin 16).
Mucin 16 is the second-longest protein in the human genome, after Day 51 (2q31.1-2q32.1): titin, the largest protein. It can be used to predict prognosis in patients with ovarian cancer.
Click here to see all 8373945 letters of Day 341