https://www.nbcnews.com/news/us-news/ice-detain-kseniia-petrova-protest-harvard-cancer-research-rcna202180
He explained that their lab’s research “requires a unique set of skills because you have to both be able to work as an embryologist and do applied math, modeling, data analysis and bioinformatics — all in one package.”
It's only Petrova who can do that.