title: Biocompatible glutathione capped gold clusters as one- and two-photon excitation fluorescence contrast agents for live cells imaging.
authors.affiliation: Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore117543.
authors.forename: Lakshminarayana
authors.initials: L
authors.lastname: Polavarapu
authors.forename: Manoj
authors.initials: M
authors.lastname: Manna
authors.forename: Qing-Hua
authors.initials: QH
authors.lastname: Xu