Additional file 1.

Organisation of the brain and the four trunk ganglia in two specimens of the tardigrade Macrobiotus cf. harmsworthi. Anti-RFamide-like immunoreactivity. Confocal micrographs of brains in dorsal view and trunk ganglia in ventral view; anterior is up in all images. Note the similar organisation of the brain and trunk ganglia in the two specimens. Arrowheads point to the repeated somata of RFamide-like immunoreactive neurons within the second and third trunk ganglia. Abbreviations: cn, connective; ex, extra-cerebral neuronal cell body; ic, inner connective; np, central brain neuropil; so, neuronal somata. Scale bars: 5 μm.

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Mayer et al. BMC Evolutionary Biology 2013 13:230   doi:10.1186/1471-2148-13-230