First aid for the USMLE step 1 inmunology 02

This lecture was given by Peter Gayed for the USMLERx Express Series (authors of First Aid for the USMLE Step 1) and is being made available on YouTube with the permission of Tao Le. (Thanks Tao!)

First Aid for the USMLE Step 1, IMMUNOLOGY + 02 = Major histocompatibility complex (MHC) molecules