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Fig. 8. Photographic sequence of adult abdominal peristalsis during normal eclosion (A—D) and CO2-induced premature eclosion (E—H). A lateral view of the abdomen showing the retraction (B; upward-pointing blue arrow) and extension (C; downward-pointing blue arrow) of normal eclosion. These movements are lacking in CO2-treated animals (E—H). Peristaltic contractions of segments are identified by green circles and black arrows.





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