Related by context. Frequent words. (Click for all words.) 49 ultrasensitive 47 sensory organs 47 biological molecules 47 taste receptors 46 poorly understood 46 circadian clocks 45 Gamma ray bursts 45 fluoresce 45 physiological 45 anatomical structures 45 genetically programmed 45 fluorescent markers 44 ultraviolet wavelengths 44 Quantum dots 44 detectable 44 detect 44 oversensitive 43 ion channels 43 physiologic 43 metabolically active 42 fluorescent molecules 42 unaided eye 42 non invasively 42 acutely sensitive 42 neural circuitry 42 sensitive 42 Ultraviolet light 42 noninvasively 42 ultraviolet light 41 intestinal tracts 41 Physiologically 41 electrical conduction 41 external stimuli 41 habituate 41 reproductive hormones 41 Geobacter 41 imprinted genes 41 vertebrate animals 41 olfaction 41 fluorescent probes 41 metabolic 41 diagnostically 41 biochemically 41 physiology 41 nematode worms 40 Nerve cells 40 C. elegans 40 metabolic processes 40 metabolise 40 hypersensitive 40 attuned 40 Adult stem cells 40 neural tissue 40 photonic crystals 40 Fruit flies 40 magnetic fields 40 vaginal secretions 40 metabolize alcohol 40 Raman spectroscopy 40 physiologically 40 fluorescent proteins 40 Physiological 40 evolutionarily conserved 40 autonomic nervous system 40 biologically 40 gut microbes 40 scanning tunneling microscope 40 epigenome 40 metabolically 40 microwave radiation 40 macroscale 40 mammalian brain 39 olfactory 39 neuronal activity 39 evolutionary origins 39 mammalian 39 Gamma rays 39 morphologically 39 Cosmic rays 39 microelectrodes 39 optical microscopy 39 subtlest 39 imperceptible 39 volcanically active 39 shorter wavelengths 39 supersensitive 39 humans 39 marine invertebrates 39 genetically predisposed 39 electrophysiological 39 visible wavelengths 39 fetu 39 hermaphrodites 39 optical microscopes 39 frequency comb 39 underdiagnosed 39 sensory neurons 39 multicellular organisms 39 organism 39 alpha particles 39 receptors