{"type":"root","children":[{"type":"paragraph","children":[{"type":"text","value":"The Artificial 3-Tissue Gram Positive & Gram Negative Bacteria and Negative Control TMA is an unstained microscope slide consisting of three formalin-fixed, paraffin-embedded tissues (FFPE): one artificially infected Gram positive (Staphylococcus aureus) rat lung, one Gram negative (Escherichia coli) rat lung and one negative human lung tissues, which helps with the analysis and validation of reagents. "}]}]}