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. 2019 Jan 4;7:3. doi: 10.1186/s40168-018-0616-z

Fig. 1.

Fig. 1

Skeleton of Isopora palifera and cell numbers within the skeleton. a The green layer was a green color constantly present in the CaCO3 skeleton beneath tissue in all colonies of I. palifera; the white layer was usual CaCO3 skeleton without a green color. The scale bar indicates 1 cm. b Average cell numbers from three colonies in the green and white layers. Different marks (a, b) indicate significant differences in cell number by student’s t-test between the layers (p = 0.0068, error bar = standard deviation)