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Fig. 2 | EvoDevo

Fig. 2

From: Reinvestigating the early embryogenesis in the flatworm Maritigrella crozieri highlights the unique spiral cleavage program found in polyclad flatworms

Fig. 2

Live imaging of the transition from an8-cell stage embryo to a 32-cell stage in M. crozieri with nuclei labelled according to the canonical spiral cleavage nomenclature. a The eight-cell stage is a product of a dexiotropic cleavage. b The 16-cell stage with its first quartet micromeres (after their first cleavage round) and second quartet micromeres (2a–2d) and macromeres (2A–2D). c The embryo has now reached the 32-cell stage. Images captured with a Zeiss Axio Zoom.V16 Stereo Microscope. Scale bar is 50 µm

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