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a Image of a live specimen of Convolutriloba retrogemma reproducing asexually by budding. White arrowheads point to buds. Note the reversed polarity. b, c CLSM projections showing muscles (blue) and serotonin-like immunoreactive nervous system (red) in dorsal (b) and central (c) planes of a mature Isodiametra pulchra. White arrowheads point to neurite bundles, asterisk marks the position of the statocyst. Scale bars: a 1 mm; b and c 50 μm
