The effect of bursectomy on vaccination against Marek's disease with the herpesvirus of turkeys.
Protection against Marek's disease following vaccination with the herpesvirus of turkeys was significantly impaired but not abolished by ablation of the bursa-dependent lymphoid system by surgery and X-irradiation. It was concluded that the humoral immune system is relatively more important in vaccinal immunity induced by the herpesvirus of turkeys compared with that induced by attenuated Marek's disease virus.
Rennie
M
M
Houghton Poultry Research Station, Houghton Huntingdon, Cambs., England.
Powell
P C
PC
Mustill
B M
BM