in young diabetic rats at eight weeks of age , there was no particular difference in ultrastructure from age-matched control rats showing an even contour of glomerular basement membrane , whereas in the diabetic rats at 12 weeks of age thickening of basement membrane with irregular protrusion of the epithelial side of lamina densa and accumulation of basement membrane-like materials in the mesangial regions could be observed .
C0085872
lamina densa
C0004799
basement membrane