I) Paraffin embedded kidney tissue obtained from the sample libraries of pathology laboratories will be studied. Slides from non-diabetics (n: 10) and diabetics with diabetic nephropathy (n: 20) and without diabetic nephropathy (n: 10) will be collected. The role of proteins involved in diabetic nephropathy as VEGF signaling and tenascin will be studied by immunohistochemistry and proximity link assay.