title: Spying on Cells: Toward a Perfect Sleeper Agent.
abstract: Creative engineering of fluorescent proteins has yielded a variety of tools for visualization of biochemical events in vivo. In this issue of Cell Chemical Biology, To et al. (2016) describe a fluorogenic green fluorescent protein that is activated by caspase-3 activity and enables imaging of apoptosis in developing zebrafish embryos (To et al., 2016).
authors.affiliation: Department of Chemistry, University of Alberta, Edmonton, AB T6G 2G2, Canada.
authors.forename: Matthew D
authors.initials: MD
authors.lastname: Wiens
authors.affiliation: Department of Chemistry, University of Alberta, Edmonton, AB T6G 2G2, Canada.
authors.forename: Xiaocen
authors.initials: X
authors.lastname: Lu
authors.affiliation: Department of Chemistry, University of Alberta, Edmonton, AB T6G 2G2, Canada. Electronic address: robert.e.campbell@ualberta.ca.
authors.forename: Robert E
authors.initials: RE
authors.lastname: Campbell
mesh_terms: D000818:Animals; D017209:Apoptosis; D020169:Caspases; D049452:Green Fluorescent Proteins; D015027:Zebrafish
chemical_list: D049452:Green Fluorescent Proteins; D020169:Caspases