That is, the growth cones collapsed. 2. In the 4th embryonicday (E4), sema 3A mRNA was expressed around the neural tube and atthe notocord.

 
  • 在雞胚發(fā)育的第 4天(E4),Sema 3A InRN表陰神經(jīng)管周?chē)图顾鳌?/strong>
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