Comparative immunogenicity of three strains of newcastle disease virus used in inactivated vaccines von Hofstad, M.S

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Cross-immunity in chickens using seven isolates of avian infectious bronchitis virus von Hofstad, M.S

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Pathogenicity of two embryo-passage levels of avian infectious bronchitis virus for the oviduct of young chickens of various ages von Crinion, R.A.P, Hofstad, M.S

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Immune response in chickens to infectious bronchitis virus, strain 33. I. Response to beta-propiolactione-inactivated virus von Coria, M.F, Hofstad, M.S

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Susceptibility of turkey poults from vaccinated and unvaccinated hens to Alcaligenes rhinotracheitis (turkey coryza) von Barnes, H. John, Hofstad, M. S.

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Immune response of poults following intranasal inoculation with Artvax vaccine and a formalin-inactivated Bordetella avium bacterin von Hofstad, M.S, Jeska, E.L

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Comparison of seven isolates of Mycoplasma meleagridis von Elmahi, M.M., Ross, R.F., Hofstad, M.S.

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Antibiotic aerosolization: the effect on experimentally induced Alcaligenes rhinotracheitis in turkeys von Van Alstine, W.G, Hofstad, M.S

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injection of turkey hatching eggs with tylosin to eliminate Mycoplasma meleagridis infection von Hofstad, M.S

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Intestinal lesions in trasmissible enteritis of turkeys von Adams, N.R, Ball, R.A, Hofstad, M.S

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A Study on the Epizootiology of Newcastle Disease (Pneumoencephalitis) von Hofstad, M.S.

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Cyclophosphamide-induced immunosuppression demonstrated in Pasteurella multocida-vaccinated chickens von Nathanson, R.M, Hofstad, M.S, Jeska, E.L

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Prevention of egg transmission of Mycoplasma meleagridis by antibiotic treatment of naturally and experimentally infected turkey eggs von Elmahi, M. M., Hofstad, M. S.

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Pathogenicity of four serotypes of avian infectious bronchitis virus for the oviduct of young chickens of various ages von Crinion, R.A.P, Hofstad, M.S

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Immune response in chickens to infectious bronchitis virus, strain 33. II. Response to virus propagated in chicken embryo kidney cells von Coria, M.F, Hofstad, M.S

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Isolation of transmissible enteritis agent of turkeys in avian embryos von Adams, N.R, Hofstad, M.S

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Factors affecting the stability of transmissible enteritis virus of turkeys von Adams, N.R, Hofstad, M.S, Frey, M.L

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Abnormalities in laying chickens following exposure to infectious bronchitis virus at one day old von Crinion, R.A.P, Ball, R.A, Hofstad, M.S

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Pathogenesis of oviduct lesions in immature chickens following exposure to infectious bronchitis virus at one day old von Crinion, R.A.P, Ball, R.A, Hofstad, M.S

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Studies on a filtrable agent associated with infectious enteritis (bluecomb) of turkeys von Hofstad, M.S, Adams, N, Frey, M.L

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