summary seventy-three flocks of fowl were tested at regular intervals for the presence of precipitins to fowl adenovirus ( av ) and infectious bronchitis virus ( ibv ) , haem-agglutinating inhibiting antibodies to bc14 virus , and of agglutinins to mycoplasma gallisepticum ( m.g . ) and mycoplasma synoviae ( m.s . ) .
C0032936
precipitins
C0003241
antibodies