Helen gave me a dead pigeon for my first attempt.
海伦给了我一只死鸽子让我开始第一次尝试。
One strain virus was isolated from dead pigeon by SPF chicken embryos.
用SPF鸡胚，从病死鸽的脑组织中分离到一株病毒。
As these racing pigeons in frail health, weather, and other reasons, these racing pigeons have been killed, the dead pigeon ring number and the legs are beginning to send, please note that check!
由于赛鸽体弱、天气和其它各种原因，以上赛鸽已死亡，死鸽环和腿已陆续寄出，请注意查收！
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