Active immunisation of ewes and their lambs.
D000818:Animals; D000906:Antibodies; D000941:Antigens; D004165:Diphtheria / Q000276:immunology*; D005260:Female; D012756:Sheep; D034561:Sheep, Domestic; D014611:Vaccination
D000906:Antibodies; D000941:Antigens
ANTIGENS AND ANTIBODIES; DIPHTHERIA/immunology; SHEEP