Bioluminescent magnetic nanoparticles as potential imaging agents for mammalian spermatozoa. Background Nanoparticle-based biomedical applications include nanomedicine, bioimaging and theranostics [1]. Recently, nanoparticle-based bioimaging technologies have focused on bioluminescent resonance energy transfer-conjugated quantum dots (BRET-QDs), such as PbS, CdSe/ZnS, and CdTe/CdS QDs [2–6]. However, BRET-QDs are under scrutiny due to their cadmium content, since cadmium has … Continue reading Luciferase enzymes and glow in the dark gonads