flatworm flame cell structure element excretory system protonephridia planaria and other |
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| navigate by keyword : anatomy animal biology cell cilia diagram element excretory flame flatworm illustration morphology nephridia nephridium osmoregulation other part physiology planaria protonephridia protonephridium schema scheme secretory structure system tube urinary vector worm |
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| Flatworm flame cell. Structure of element of excretory system. Protonephridia of planaria and other flatworm isolated on white background |
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