Fig. 3From: Visualization of internal 3D structure of small live seed on germination by laboratory-based X-ray microscopy with phase contrast computed tomographySegmentation of embryo. The manual segmentation procedure is explained using high-resolution CT slices of pansy seeds at three stages of germination; the data used are the same as those used in Fig. 4. a Original CT slices magnified around embryos. b Corresponding CT slices with lines that delineate embryo boundaries. c Corresponding embryos segmented. Scale bars: 20 μmBack to article page