Fig. 5

Tilescan transmitted light images of an Alcian blue (pH 2.5) and PAS stained 7 μm histology section of E. pallida (a-f). Putative mucocyte abundance and appearance varied depending on location within the body, with the most mucocytes being present in the column (a, c, f), and the lowest abundances in the central pedal disc and tentacles (a and d). The mucocytes identified in the column were large and full (c & f), whereas those in the pedal disc were smaller in size and number d. Arrows indicate externally secreted muco-polysaccharide material. (a) 200 μm, (b) 20 μm, (c) 50 μm, (d, e) 20 μm, (c) 50 μm