title: Distribution and morphology of antibody-producing cells in ducks.
mesh_terms: D000818:Animals; D000917:Antibody Formation; D000921:Antibody-Producing Cells / Q000145:classification / Q000166:cytology*; D004372:Ducks / Q000276:immunology*; D008198:Lymph Nodes / Q000166:cytology; D013154:Spleen / Q000166:cytology