This delicate tracing is not exquisite embroidery on some long-dead emperor's silk sleeve - it is a picture of the branched axon of a single sensory neuron; each little loop embraces the root of a hair follicle on a mouse's back.
Read Nerve endings reveal hidden diversity in the skin, open access.
Also read Morphologic diversity of cutaneous sensory afferents revealed by genetically directed sparse labeling open access.
A news take on this: Why our backs can't read braille: Scientists map sensory nerves in mouse skin
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