Analytical Currents: Light-emitting nanofibers for lab-on-a-chip applications | Microfluidic system for dynamic microarrays | COINs for Raman-based tissue analysis | Scanning outside the NMR tube | Assessing phosphopeptide isolation methods | Breath analysis without sample pretreatment | Apoptosis probe with a quantifiable readout | Patterned paper for cheap, portable bioassays | Proteotypic peptides in the spotlight