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Fig. 2. Expression of crustacean cardioactive peptide (CCAP) mRNA during embryonic
development of Carcinus maenas. Three to 11 independent measurements
of different embryo batches were made at each developmental stage. Error bars
indicate +1 s.e.m. Developmental stages were defined according to (Chung and
Webster, 2004); additionally, the percentage development is indicated in
brackets. During early developmental stages (yolk-limb buds), very low, but
significant numbers of transcripts were observed, which are shown in
brackets.