Fig. 2
From: Collagen type IV alpha 1 chain (COL4A1) expression in the developing human lung
COL4A1 expression in the newborn lung (patient No.69). A DAB staining. B DAB staining after digital image processing. Green: low threshold area without high threshold area (mainly extracellular expression). Red: high threshold area alone (mainly intracellular expression). The green and red area together corresponds to the total COL4A1 expression. C The size of the tissue covered area (black)