Caption: Fluorescent light microscopy of fibroblast cells being stimulated with glutamate. The glutamate causes fluctuations in the levels of calcium ions in the cells, which is visible as a wave of colour across the cells. These cells have been tagged with a fluorescent marker that activates in the presence of calcium ion flow. Glutamate is an important signalling molecule in the body, playing an excitatory role.

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Keywords: biological, biology, calcium, cell, cells, colorful, colourful, culture, cultured, excitatory, fibroblast, fibroblasts, flow, fluorescence, fluorescent, flux, glutamate, histology, ion, ions, light micrograph, lm, neurotransmitter, normal, oscillation, oscillations, physiological, physiology, signal, signaling, signalling, spark, sparks, stimulation, wave

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Fibroblasts stimulated with glutamate

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