Fig. 4
From: Silica nanoparticles with encapsulated DNA (SPED) to trace the spread of pathogens in healthcare
Results of the ‘Patient experiment’ (Run-1 to Run-3). SPED, silica nanoparticles with encapsulated DNA. Quantitative results of patient experiment involving a real-world toilet-use sequence. The concentrations of SPED as measured by qPCR from individual swab sites are displayed on a logarithmic scale. The baseline corresponds to the background concentration, meaning any positive value in the diagram corresponds to a signal above the baseline samples taken before SPED deployment