You are spot on, this is a quote from the CEO of the company...

You are spot on, this is a quote from the CEO of the company who's technology was critical in harvesting the live CTCs.

"This research could allow for the optimisation of cancer care by utilising time-controlled approaches for the treatment of breast cancer. For example, treatments which are most effective during the rest-phase, or which can reduce the impact of the circadian rhythm on CTC and CTC cluster release during the rest phase. The research also identified the role of key circadian rhythm hormones in metastasis including melatonin, testosterone and glucocorticoids, which may provide targets for novel drug therapies and are likely to be of interest for investigation by biopharma companies."