The story is a collaboration between MIT Technology Review and Aventine, a non-profit research foundation that creates and supports content about how technology and science are changing the way we live. It's not often you get a text about the robustness of your immune system, but that's what popped up on my phone last spring....

This is today's edition ofThe Download,our weekday newsletter that provides a daily dose of what's going on in the world of technology. How healthy am I? My immunome knows the score. Made up of 1.8 trillion cells and trillions more proteins, metabolites, mRNA, and other biomolecules, every person's immunome is different, and it is constantly...