https://en.wikipedia.org/wiki/Interferon#/media/File:Vials_of_Interferon_Image_3549-PH.jpg Day 201 has 39 protein-coding genes (browser view) including 16 interferon genes.
The interferons are expressed in response to infection and cancer.
Click here to see all 8649670 letters of Day 201 with IFNA1 underlined.