The brain might look homogenous to the naked eye, but it's actually filled with an array of cell types, each of which expresses a distinct set of genes depending on its precise location.

以肉眼看起来，大脑里的肉挺均匀，但实际上它充满各种各样的细胞类型，根据其所在的确切位置，每个类型由不同的基因组表达。

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While both CAIROS and GoalRef use magnetic fields around the goal and need to insert a chip in the ball, Hawk-Eye and GoalControl use a 3D imaging system to determine the precise location of the ball.

CNN: Latecomer wins FIFA goal-line tech deal