In this minsode, I answer a WTFer's question about mRNA. I explain the Central Dogma of Biology...how genes get are expressed as proteins, and how mRNA can be used to train an immune system to recognize an invader. If you have a nature question, send me an email at wtfbiology@gmail.com, or send a message via Facebook, Instagram, Twitter or TikTok @wtf_biology on all platforms. I'll try to answer your question as a minisode or maybe even a full episode. As always, music is by Dr. Ron Deckert; find him on SoundCloud. Check out my YouTube channel for Cool Ass Nature Shit videos. In these 2-ish minute videos, I walk around the forest by my house (or wherever I happen to be) and point out shit that I think is cool. You can find bonus content, including exclusive Cool Ass Nature Shit videos, at https://www.patreon.com/lazybiologyproductions. You'll find all the science communication projects I am working on and decide which ones you would like to support. THANK YOU to all the patrons!