Editorial. Comments on a study by Dale R. Abrahamson and colleagues, published in the 'Kidney International' journal, which examined laminin-1 reexpression in Alport mouse glomerular basement membranes (GBM). Deposition of laminins alpha1 and beta1 in Alport GBM; Association between GBM lesions and deposition of ectopic laminins; Implications of the restricted expression pattern of laminin.