title: GSM6756178: Ctrl, normal chow, Visium; Mus musculus; OTHER
library_construction_protocol: Mice were sacrificed by CO2 inhalation, and hearts were immediately cannulated and perfused with cold PBS. Remove the hearts, create formalin-fixed, paraffin-embedded (FFPE) blocks. Heart FFPE blocks were sectioned (5μm) and placed on the already barcoded spots on the glass slide. cDNA libraries were prepared for sequencing following the 10x Genomics Visium protocol