Organisation of the peripheral nervous system in the tardigrade Macrobiotus cf. harmsworthi.Combined anti-tyrosinated and anti-acetylated α-tubulin immunolabelling. Confocal micrographs. (A) Anterior body half of a specimen in lateral view (anterior is left). (B) Anterior body half of a specimen in dorsolateral view (anterior is left). (C) Posterior body region of a specimen in lateral view (anterior is up). Abbreviations: al, anterior leg nerve; as, anterolateral sensory field; cn, connective; dn, dorsolateral nerve tract; en, oesophageal neurite; ga1, first trunk ganglion; ga4, fourth trunk ganglion; ic, inner connective; le1–le2, position of legs 1 and 2; lg, leg ganglion; ln, lateral nerve tract; np, central brain neuropil; oc, outer connective; pg, peripheral ganglion; pl, posterior leg nerve; pn, peripheral nerve; ps, posterolateral sensory field; sg, stomatogastric ganglion; st, neurite bundles innervating the stylet musculature. Scale bars: 20 μm (A, B) and 5 μm (C).