Chemical substance Bessel beam 2 Biological tissues 2 Chemical detection 2 Chemical sensing 2 Chemical sensors 2 Gaussian beams 2 Highly sensitive detections 2 In-vivo 2 Laser beams 2 Proof of concept 2 Raman scattering 2 Raman spectroscopy 2 Scattering medium 2 Spectrum analysis 2 Tissue 2 Tissue slice 2 Vivo applications 2 Additives 1 Adjacency Matrix 1 Adjacency matrices 1 Article 1 Bessel beam Raman spectroscopy 1 Chemical compositions 1 Circulating fluidized bed boiler 1 Cloning 1 Combustion 1 Combustion pro-cess 1 Cultivation 1 Directed graph 1