A team at Scripps Research has created a microchip that can rapidly reveal how a person's antibodies respond to viruses using only a drop of blood. This game-changing technology, called mEM, condenses a week’s worth of lab work into 90 minutes, offering a powerful tool for tracking immune responses and fast-tracking vaccine development. Unlike earlier methods, it needs far less blood and delivers more detailed insights, even revealing previously undetected antibody targets on viruses like SARS-CoV-2 and influenza.