What is real here这里什么是真实的
Everything. The cell is a MouseLight reconstruction from the Janelia Research Campus: one neuron in one mouse, filled with a fluorescent protein, imaged through the whole brain, and traced by hand along every branch. Its dendrites and its axon are drawn from that tracing, its cell body sits where it was found, and the pink points are the axon's measured endings. The labels are pinned to measured points on this cell, so they move with it. The only invented thing is the speed of the signal, which runs at 4 millimetres per second along the fibre, about 250 times slower than a real spike, so that you can watch it. 一切都是真实的。这个细胞是 Janelia 研究园区 MouseLight 计划的重建：一只小鼠体内的一个神经元， 被荧光蛋白填充，整脑成像，再由人沿着每一根分支手工追踪。它的树突和轴突都来自那次追踪，胞体就在被发现的位置， 粉色的点是轴突实测的末端。标签固定在这个细胞的实测点上，所以会跟着它转动。唯一虚构的是信号的速度： 它以每秒 4 毫米沿纤维前进，比真实的动作电位慢大约 250 倍，这样你才能看清。
Source: Winnubst J. et al., Cell 179, 268 (2019); data from the MouseLight NeuronBrowser, CC BY-NC 4.0, in the Allen Common Coordinate Framework. Back to 20,000 neurons of 70 million. 来源：Winnubst J. 等，Cell 179, 268 (2019)；数据来自 MouseLight NeuronBrowser，CC BY-NC 4.0，艾伦通用坐标框架。 返回七千万个神经元中的两万个。