Fw: [新聞] 逆天!長生不老的燈塔水母
※ [本文轉錄自 Gossiping 看板 #1I2Y8i6s ]
作者: Bianvera (扁維拉) 看板: Gossiping
標題: [新聞] 逆天!長生不老的燈塔水母
時間: Tue Aug 13 20:10:17 2013
逆天!長生不老的燈塔水母
http://news.ftv.com.tw/NewsContent.aspx?ntype=class&sno=2013813I18M1
出生、長大、衰老、死亡,全世界所有生物,都逃不過這樣的命運,但唯一的例外,是一
種燈塔水母,這種水母能逆轉老化過程,返老還童,除非生病或被吃掉,否則理論上可以
長生不老。
要用顯微鏡才能看清楚的燈塔水母,卻蘊藏了長生不老的驚人祕密,原來,燈塔水母的卵
孵化之後,會形成像樹枝一樣的水螅體,再慢慢分裂出幼小的水母,一般稱作碟狀幼體。
碟狀幼體要經過一段時間,才會長大成成年水母,具有繁衍後代的能力,但燈塔水母神奇
的地方,就在於牠可以逆轉老化程序,從大人再變回小朋友,重新長大一次。
所謂細胞轉分裂的能力,讓燈塔水母成為地球上,唯一能夠返老還童的生物,而且次數沒
有限制,只要受到外界環境刺激,這項機制就會啟動。
換句話說,除非生病或是被天敵吃掉,否則燈塔水母可以長生不老,不可思議的燈塔水母
,堪稱生命奇蹟,也勾起無數學者的好奇心。
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