Fig. 9From: Spatial compartmentalization of free radical formation and mitochondrial heterogeneity in bivalve gills revealed by live-imaging techniques a1: representative ageladine-a pH staining of filament section, a2: corresponding transmission image. b1: representative ageladine-a pH staining of the ventral bend, b2: transmission image. pH varied among SMG mucus vesicles between acidic (grey arrow) and less acidic vesicles (white arrow). Scale bar = 20 μmBack to article page