上集link: 三十秒科學–被切除90%還有能力回復正常形狀及功能的器官586Please respect copyright.PENANAvJPFk5Hsjj
https://lih.kg/2433238586Please respect copyright.PENANAO08nq3IlHP586Please respect copyright.PENANAtiNa1VXchq
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撇除皮膚的話,肝臟是我們身體最大的器官。586Please respect copyright.PENANAvRY4LZpRBA
除再生能力強大之外,肝臟的另外一個特點就是會與我們的體型成正比關係。586Please respect copyright.PENANAMC2gHNH9jp
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(圖2)肝臟細胞根據其所在位置,共可分為三個區域(Zone)。586Please respect copyright.PENANAAREn7mDmsm586Please respect copyright.PENANAlSrKkEoLGq
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三個區域的肝臟細胞在新陳代謝及基因表達上均有顯著的分別。586Please respect copyright.PENANAQ70MK3On97
譬如說Zone1細胞所獲得的氧氣量比Zone3的為高,Zone1細胞製糖的能力比Zone3的為強。586Please respect copyright.PENANAGyIKGclnpG
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(圖3)在正常情況下,Zone1的肝臟細胞會一直在減少,並由Zone2的細胞繁殖補回所失去的數量,而Zone3的細胞數量則相對上不會有太大變化。586Please respect copyright.PENANAlbehwDhRMB586Please respect copyright.PENANAPS8Xl6Nwqi
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(圖4)當Zone3區域細胞受損的話,Zone1及2區域細胞便會一起繁殖,填補所失去的細胞。586Please respect copyright.PENANAHcpSYoKy6g
反之,當Zone1區域細胞受損的話,Zone2及3區域細胞便會一起繁殖,對其作出填補。586Please respect copyright.PENANAaeAGuRbjjl586Please respect copyright.PENANAS9RKRKOFsF
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若果Zone1、2、3細胞一起受損的話,根據老鼠實驗指出(Ref2),開頭時份將會由Zone1的細胞主導繁殖,數量到達一定程度後,Zone2區域的細胞便會出手幫忙,而Zone3區域細胞在整個回復的過程中所參與的比例則全程偏低。586Please respect copyright.PENANADSHFiYegKl
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如果想我快啲出文的話,請入去Penana網站科普專欄–薯不揀單俾一個like以及Bookmark,這對我非常之重要。586Please respect copyright.PENANA4fv37JDugo
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Link: https://www.penana.com/story/66244/%E7%A7%91%E6%99%AE%E5%B0%88%E6%AC%84-%E8%96%AF%E4%B8%8D%E6%8F%80%E5%96%AE/toc586Please respect copyright.PENANANFnpxR3C2v
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同時亦可以在Penana網站裡按「買一嚿/半嚿薯仔」,以課金的方式推動我繼續搜羅資料寫文,多謝。586Please respect copyright.PENANAe0KcnH8D9A
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Link:586Please respect copyright.PENANAdYbrIjdhwQ
https://www.penana.com/user/27349/%E8%96%AF%E4%BB%94%E8%81%9E%E8%8C%B1%E8%8E%89/portfolio586Please respect copyright.PENANALRg8iMrrz0
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除非Facebook及IG重開侵侵的account,否則我的IG將不會再作更新,只會寄居本土LIHKG及Penana。586Please respect copyright.PENANADwwZAsMHOm
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Ref1:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6387900/586Please respect copyright.PENANArRLCqtfYRE
Ref2:https://science.sciencemag.org/content/371/6532/eabc4346586Please respect copyright.PENANAbgRb7Sh8SD
Ref3:https://pubmed.ncbi.nlm.nih.gov/18600221/586Please respect copyright.PENANAZqILfQX0LD
Ref4:https://www.ncbi.nlm.nih.gov/books/NBK421/586Please respect copyright.PENANAYeeYQcPYNF
Ref5:https://science.sciencemag.org/content/371/6532/887586Please respect copyright.PENANArCDMdrPO8Y