| III. Support |
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| • | A. Hydrostatic “skeleton” |
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| • | B. Muscle cells |
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| – | Epitheliomuscular cells |
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| – | Longitudinal and circular myofibrils |
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| • | C. Spicules
(in soft corals) |
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| • | D. CaCO3 “rock”
formation (in stony corals) |
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