Translation of "brain cell" into Chinese

For example, just three weeks after conception, the human embryo begins to form brain cells.

比如说,胚胎受孕后仅三个星期,就开始形成脑细胞。

As people get older, their brain cells become less efficient.

隨著人們年齡的增長,其腦細胞就變得比較沒有效率。