Fig. 3From: Silica nanoparticles with encapsulated DNA (SPED) – a novel surrogate tracer for microbial transmission in healthcareDetection of SPED1–3 on environmental and patient body sites and healthcare worker’s hands in Experiment 1. Legend: red/green/blue, 13 test sites of SPED1-3; yellow, healthcare workers’ hands; blue line, MDL minimal detection limit; , introduction of SPED1, SPED2 and SPED3, respectivelyBack to article page