Plasma cells in the avian Harderian gland and the morphology of the gland in the rook.
D000818:Animals; D001717:Birds / Q000033:anatomy & histology*; D006243:Harderian Gland / Q000033:anatomy & histology*; D007765:Lacrimal Apparatus / Q000033:anatomy & histology*; D010950:Plasma Cells / Q000166:cytology*