Vol. 9, Issue 12, Part C (2025)

The present study was conducted on total forty-five (45) numbers Pati duck of Assam at different stages of postnatal development. In the Scanning Electron Micrograph of the Harderian gland of Pati duck (Anas platyrhynchos domesticus) the tubular structures were looked like hole having some secretion inside it. The apical portion of the cell was filled with mucous secretion and looked like empty space, more prominent in higher age group which was observed in the Transmission Electron Micrograph. The secretory mucous vesicles pushed the nucleus of the cell towards the basal border. The myoepithelial cells were also observed near the basement membrane.