“…The addition of membrane proteins (MPs) gives these NPs an extra layer of biomimicry [ 19 ]. We recently explored the use of leukocyte MPs to increase targeting towards inflammation [ 16 , [20] , [21] , [22] , [23] , [24] , [25] ]. These NPs give us unique leverage on the targeting of inflammation sites: macrophages are one of the first cell types recruited to an inflammation site, and we showed that this behavior was retained by our biomimetic NPs [ 26 , 27 ].…”