A study on the synthesis and secretion of immunoglobulins by the Jarderian gland of the fowl after eyedrop vaccination against infectious bronchitis at 1-day-old.

One-day-old chickens with maternally derived antibodies to infectious bronchitis virus (IBV) were vaccinated against IB by eye-drop. At 2 and 3 weeks of age the synthesis of immunoglobulins of the IgA isotype in the Harderian gland was demonstrated by immunofluorescence. With an anti IgG conjugate diffuse fluorescence of IgG was observed in the gland at 2, 3 and 4 weeks of age.