Zyagen Paraffin tissue sections are made of normal healthy tissues which are freshly harvested of single donor, fixed in 10%Neutral Buffered formalin, and processed for paraffin embedding. Paraffin embedded blocks are sectioned by microtome at a thickness of 5microns and sections mounted on positively charged slides (2-4 sections per slide depending on size of tissue in blocks). Paraffin tissue sections are prepared in RNase- and protease-free environment and are ideal for immunohistochemistry and in situ hybridization. Tissue sections are sold in a unit of 10 slides. Paraffin sections are shipped in vacuum sealed slide boxes or slide mailers at room . Quality of tissue morphology is tested using H&E staining.