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The Manchus were careful to preserve their own ethnic and cultural identity by outlawing intermarriage between Manchus and Chinese,and by forbidding the Chinese from traveling to Manchuria and learning the Manchurian language.
Pseudocoelom
A fluid-filled body cavity lying inside the external body covering but outside the innermost gut tube, found in some invertebrates.
Phylogeny
The evolutionary history and lineage of species or a particular group of organisms.
Deuterostome
A classification of animals defined by their developmental characteristics, where the anus forms before the mouth during embryonic development.
Echinoderms
Echinoderms are a group of marine invertebrates that include sea stars, sea urchins, and sand dollars, characterized by radial symmetry and a unique water vascular system.
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