斑馬魚在成長的時候大多處於相對透明的狀態，其器官生長的過程可以說是亳無保留地呈現在眾人眼前。550Please respect copyright.ＰＥＮＡＮＡX2f9iPFUhB
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對於專門研究生長機制的科學家來說，班馬魚絕對是一道非常方便用於研究的動物模型。550Please respect copyright.ＰＥＮＡＮＡtlDFWs122R
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(圖2)約於受精後24小時，班馬魚的心臟亦將形成，且能收縮膨脹把紅血球送遍全身。550Please respect copyright.ＰＥＮＡＮＡNB9yXiIQgY
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有科學家嘗試把一氧化碳注進水裡，試圖透過一氧化碳與紅血球的結合，抑制紅血球輸送氧氣的能力，從而探討初生時候的紅血球有甚麼功用。550Please respect copyright.ＰＥＮＡＮＡo8IVHMAooA
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結果可謂出人意表，就算利用一氧化碳抑制紅血球輸氧的能力，頭5日內，斑馬魚依舊能吸取及耗用氧氣，其耗氧量跟對照組合並無分別。550Please respect copyright.ＰＥＮＡＮＡGhhLjJWG2L
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(圖3)從圖中可見，隨著生長時數推展，班馬魚的心臟跳動速度亦有所增長，但無論是否注入一氧化碳，其跳動速度亦無太大的分別。550Please respect copyright.ＰＥＮＡＮＡKDORPNpu8o
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這相信是因為頭5日的班馬魚體積非常微細，氧氣能夠透過自然擴散的方式進入班馬魚內部，並不需要紅血球的任何協助。550Please respect copyright.ＰＥＮＡＮＡd5ap9QpJK9
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既然頭5日氧氣輸送並不需要紅血球的協助，那為何在受精的第一日後便已發展出撲撲跳的心臟呢?550Please respect copyright.ＰＥＮＡＮＡfnJQMBnF4Y
除了氧氣後，電解質或營養等物質均需透過血液循環系統輸送，它們自然擴散的效率比氧氣為低，需要依靠澎湃的心臟經由血管送到各部位內外。550Please respect copyright.ＰＥＮＡＮＡDgRxk4Acbd
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https://www.penana.com/user/27349/%E8%96%AF%E4%BB%94%E8%81%9E%E8%8C%B1%E8%8E%89/portfolio550Please respect copyright.ＰＥＮＡＮＡhX5lWcMBRh
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Ref1:https://pubmed.ncbi.nlm.nih.gov/8756015/
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