First person – Sara Hernández Pérez

First Person is a series of interviews with the first authors of a selection of papers published in Journal of Cell Science, helping early-career researchers promote themselves alongside their papers. Sara Hernández Pérez is first author on ‘B cells rapidly target antigen and surface-derived MHCII into peripheral degradative compartments’, published in JCS. Sara is a PhD student in the lab of Pieta K. Mattila at University of Turku, Institute of Biomedicine, Finland, investigating the role of Rab proteins and the actin cytoskeleton in antigen trafficking and B cell activation.