一旦这种新制造出来的动物的机体能够正常工作以后,各种水凝剂将逐渐被自然分泌物所取代。
In the case of osteogel, that secretion is bone.
取代osteogel的就是骨骼。
The biggest difficulty Dr Fril has encountered is with nerve cells.
弗里博士遇到的最棘手的问题是如何处理神经细胞。
Unlike most other types of cell, which are small, the protuberances from a nerve cell, knownas axons and dendrites, may stretch from the animal s spinal cord to the tips of its toes.
和其他大多数种类体积较小的细胞不同,神经细胞上的突起可能从脊髓一直延伸到脚趾尖。
To deal with this problem, the pet printer leaves a hole in each layer of cells at every pointthrough which a nerve cell is supposed to pass.
为了解决这个问题,宠物打印机在每个细胞层都留有一个小孔,以便神经细胞的突起能从中穿过。
The holes are then filled with nerve-growth factor before the next layer is printed,
之后,在打印下一个细胞层之前往这些小孔中注满神经生长因子。
so that when the main body of the nerve cell is sprayed into place it rapidly grows axonal anddendritic protuberances to the right destinations.
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