Isolation of an Agent in Chicken Embryo Causing Infectious Sinusitis of Turkeys

Abstract
An agent capable of producing clinical sinusitis in turkeys was isolated and propagated in the yolk sac of the developing chicken embryo. 2. Impression smears of infected yolk sacs stained by Machiavello's technic revealed morphologic forms closely resembling those found in the lymphogranuloma-psittaeosis group of agents (Chlamydozoaceae).

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