Label-FreeHigh-ResolutionPhotothermalOpticalInfraredSpectroscopyfor Spatiotemporal Chemica lAnalysis in Fresh, Hydrated Living Tissues and Embryos
Label-free chemical imaging of living and functioning systems is the holy grail of biochemical research. However, existing techniques often require extensive sample preparation to remove interfering molecules such as water, rendering many molecular imaging techniques unsuitable for in situ structural studies. Here, we examined freshly extracted tissue biopsies and living small vertebrates at submi
