Developmental biology

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Developmental biology [r]: The study of how cells grow and interact to form an organism. [e]

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(CC) Image: Chiori et al., 2009
A typical study in developmental biology, targeting the expression of several genes (CheHox9-14A, CheHox9-14B, CheHox9-14C, CheHox1) in the hydroid Clytia hemisphaerica at different stages of development (non-fertilised egg, blastula, gastrula, planula and medusa). Scale bars: P: 500 µm; E, J, O: 100 µm; A–D, F–I, K–N: 50 µm; Q, R: 10 µm.