Antigen-antibody reactions 1 Biological samples 1 Biomarkers 1 Biomolecules 1 Cell culture 1 Colorimetric sensing 1 Diagnosis 1 Exosomal miRNA 1 Exosomes 1 Extraction 1 Immunoaffinity 1 Nucleic acids extractions 1 Paper based devices 1 Point-of-care testing 1 Polymerase chain reaction 1 RNA 1 Silica nanoparticles 1 Whatman filter papers 1 Wound fluid 1 colorimetric sensing 1 exosomal miRNA 1 exosome 1 immunoassay 1 nucleic acid extraction 1 paper-based device plasma 1 wound fluid 1