They were, at that stage, much smaller and had an elongated shape that allowed them to slip between other cells. It came as a great surprise when we discovered that the cells giving birth to the new neurons were a type called radial glia, which were thought not to occur in adulthood and were not known to give birth to neurons.
然后我们试图识别处于其迁徙途中、将成为神经细胞的那些细胞。在过程中，它们的形状非常小并且被拉长了，这样可以使它们穿过其他的细胞。当我们发现产生新的神经细胞的那些细胞是一种神经干细胞时感到非常惊讶，因为我们一直认为这不可能在成年期发生，并且神经干细胞一只被认为是不会产生神经细胞的。