胚基,芽基,原基,胚莖

These induced blastemas never progressed to the later stages of regeneration to form a new limb, however.One more ingredient was needed. 然而這些誘導(dǎo)形成的芽基卻無(wú)法繼續(xù)進(jìn)展到后期而長(zhǎng)出新腳，顯然我們還缺少了其他要素。

They found that salamander regeneration begins when a clump of cells called a blastema forms at the tip of a lost limb. 他們發(fā)現(xiàn)，蠑螈再生是從一團(tuán)被稱(chēng)為芽基的細(xì)胞在斷肢頂端形成的時(shí)候開(kāi)始的。

But if we carefully deviated a nerve to the wound site, we could induce those fibroblasts to form a blastema instead. 但如果我們小心地將一條神經(jīng)轉(zhuǎn)向受傷的地方，我們就可誘導(dǎo)那些纖維母細(xì)胞形成芽基。

Tanaka next hopes to decipher the genetic instructions governing blastema formation. 塔納卡接下來(lái)希望破譯控制芽基形成的基因指令。

Blastema in WT consists of sheets of densely packed small blue cells with hyperchromatic nuclei, little cytoplasm and conspicuous mitotic actiity. 后腎胚芽由密集排列的片狀小藍(lán)色的細(xì)胞構(gòu)成，核染色質(zhì)粗糙，胞漿稀少，有絲分裂像明顯。