The process is triggered by a molecule called heat shock factor (HSF), which interacts with genes to cue the synthesis of new proteins.But this well-known process had never been seen in living cells.

• 这一过程被一个名为热激活因子（HSF）的分子所触发，它与相关基因相互作用，发出合成新蛋白的信号，但这一广为人知的过程还从没有在活细胞中观察到。