Rapid determination of medulloblastoma subgroup affiliation with mass spectrometry using a handheld picosecond infrared laser desorption probe† †Electronic supplementary information (ESI) available. See DOI: 10.1039/c7sc01974b Click here for additional data file.

Techna Institute for the Advancement of T Network, 100 College Street, Toronto, ON, M [email protected] Department of Medical Biophysics, Universi ON, M5G 1L7, Canada Peter Gilgan Centre for Research and Learn Street, Toronto, ON, M5G 0A4, Canada Drug Discovery Program, Ontario Institu Avenue, Toronto, ON, M5G 0A3, Canada Department of Surgery, University of Toron 1P5, Canada Keenan Research Center for Biomedical Scie St. Michael's Hospital, 30 Bond Street, Toro Institute of Biomaterials and Biomedical College Street, Toronto, ON, M5S 3G9, Can Arthur and Sonia Labatt Brain Tumor R Children, Toronto, ON, M5G 1X8, Canada Developmental & Stem Cell Biology Program Street, Toronto, ON, M5G 0A4, Canada † Electronic supplementary informa 10.1039/c7sc01974b ‡ These authors contributed equally to th Cite this: Chem. Sci., 2017, 8, 6508