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Coaxially-printed skeletal muscle and motor neuron cells, fixed and immunostained for nuclei (DAPI, blue, A), α-sarcomeric actinin (red, B), βIII tubulin (green, C) and neuromuscular junctions (α-bungarotoxin, magenta, D). Image E is an overlay of A,B,C and D E. Scale bars represent 100 µm.
