Fig. 8From: Harderian gland of flying and non-flying birds: morphological, histological, and histochemical studiesLight micrograph of the HG of ibis (A, B, C) and pigeon (D, E, F) showed the lobules (L) formed from secretory acini (Ac) and covered by capsule (arrow), septa (S), and irregular lumen of duct (zigzag arrow). Note the broad extremity of the gland in A and E and pointed extremity in B and D. Stain, H&E in A, B, D, and E and Masson trichrome in C and FBack to article page