Fig. 4From: Bioluminescent magnetic nanoparticles as potential imaging agents for mammalian spermatozoaMicrograph of mammalian spermatozoa cells incubated with Luc + MNPs. Arrow heads indicate Luc + MNP locations and show the nanoparticles in close proximity to the spermatozoa, with multiple nanoparticles attached to head and/or tail of the sperm cells. Scale bar 10 micronsBack to article page