COL18A1 and glomerulonephritis: By contrast, mean endostatin concentration in mice with developed glomerulonephritis, i.e. old BCL2tg and E/Rtg;BCL2tg animals (BCL2tg 5.2, E/Rtg;BCL2tg 5.1 nmol/L endostatin) were significantly elevated compared with young mice (BCL2tg 3.2, E/Rtg;BCL2tg 2.3 nmol/L endostatin).