‘Did you get it all?’ Experimental ‘pen’ could help surgeons detect remaining cancer instantly

Scientist Jialing Zhang demonstrates using the MasSpec Pen to analyze a human tissue sample.
Scientist Jialing Zhang demonstrates using the MasSpec Pen to analyze a human tissue sample.

A prototype “pen” technology aims to give cancer surgeons a better sense of whether they’ve removed all of a tumour while in the operating room.

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