Figure 1From: The sea urchin (Strongylocentrotus purpuratus) test and spine proteomes SDS-PAGE separation of test and spine organic matrix proteins. The mass of marker proteins is shown in kDa. T, test matrix; S, spine matrix. Approximately 200 μg of matrix were applied per lane. Vertical lines and numbers between lanes T and S indicate the sections excised for in-gel digestion.Back to article page