Coral polyps and their symbionts

23 Apr 2021

Corals are the one of the simplest animals, with only two layers of cells (called germ layers) forming in early embryonic development – an inner layer, the endoderm, and an outer layer, the ectoderm. Each germ cell layer ultimately develops into different types of cells, including digestive cells, muscle-like cells, nerve-like cells and stinging cells (cnidocytes) but how each cell type forms during development still requires investigation.

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