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pathogen - disease causing agent, such as bacteria or viruses, physical barrier - structure that prevents a pathogen from entering the body, immune system - system that includes the white blood cells and lymphatic system, lymphatic system - drains excess fluid from tissues and returns it to the circulatory system, white blood cells - blood cells that fight pathogens, antigens - unique chemical markers on the surface of pathogens, antibodies - molecules that help destroy pathogens, immunity - the condition of having antibodies for a certain pathogen, vaccine - a serum made from a dead or weakened form of bacteria or virus that prevents serious illness,

Immune System Vocabulary

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排行榜

匹配遊戲是一個開放式範本。它不會為排行榜生成分數。

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恢復自動保存: ?