FluoTissue® prepared slide contains a 550μm fixed tissue section cleared and mounted in RapiClear® 1.52 reagent (Cat. no. RC152001/RC152002). RapiClear® 1.52 is an aqueous tissue clearing reagent not only can highly preserve tissue components, but matches the refractive indices of fixed tissue section to that of immersion oil and glass coverslips (1.52nD) to minimize both light scattering and spherical aberrations. Each section multi-labeled with fluorescent dyes is especially useful for confocal microscopy to create stunningly high-quality images and reconstruct 3D models in sub-micrometer-scale resolution.