(A) Hematoxylin-eosin staining of LG sections of 7 (a), 18 (b), and 24 (c) weeks old NOD mice showing that with increasing age the acinar tissue sustains a severe inflammatory infiltration. (B) Movat-pentachrome staining of 18 weeks old BALB/c (a, b) and NOD (c, d) LGs. Collagen=yellow, GAG=blue-green, elastin=dark-blue/black, nuclei=dark-red. (C) When compared to Hart's stained BALB/c LG sections (a, b), the LG tissue of age-matched 18 week old NOD mice (c, d) shows less elastic fibers, with fewer, but enlarged ducts and blood vessels.