opsin, photoreceptor, photoreceptors, morphogen, rhodopsin, neurone, dpp, organogenesis, pineal gland, nadph, chloroplasts, superior colliculus, porphyrins, depolarizing, plasminogen, ouabain, glycolipids, auxin, meristem, melanocyte, lucidum, stilbene, photochemical reaction, chromophores, bile acid, oxidative phosphorylation, sensory neuron, eicosanoids, luciferin, exocytosis, erythropoiesis, motoneurons, photoperiod, plastids, epithelia, osmotic pressure, cyclization, neuromuscular junction, peroxisome, purkinje cell, adrenal cortex, leydig cell, hydrogenase, centrioles, mesenchymal, metazoan, organelle, bistable, pineal, plasmon, suberin, pyruvate, amphioxus, ciliates, palmitate, tyrosine, microcirculation, phagocytes, microelectrode, inferior colliculus, interneuron, ciliary body, xenopus laevis, nucleolus, photochemistry, neuroendocrine, electromotive force, neurotransmission, glycoside, paramagnetic, gluconeogenesis, calmodulin, cva, morphogenesis, homologous chromosomes, centromeres, elastase, glomerulus, microcapsule, proteoglycan, hydroxyl radical, mesenchyme, vascularisation, luteolin, catecholamine, trigeminal, visual cortex, excitatory, astrocyte, neurites, cytidine, hindbrain, coenzyme, tyrosinase, conformational, sphingomyelin, uracil, abscission, dedifferentiation, macromolecule, nernst, spermatogenesis, pigment, chlorophyll, chromophore, photopigments, pigments, allele, emulsion, enzyme, heads, infrared, neurotransmitter, polymerase, polymorphisms, protein, readout, subunits, transporter, hemoglobin, admissible, adsorbate, antimicrobial, areal, atom, biocultural, cd, chlorine, cytochrome, deuterium, etchant, geographic, geographical, hydrogenic, intraindustry, isotopic, milligram

iodopsin, retinal purple, rhodopsin, visual purple