Flame cells are specialized excretory structures found in certain invertebrates, particularly within the phyla of flatworms, rotifers, and some nemerteans. These cells function in osmoregulation and excretion, helping to maintain fluid balance and eliminate waste products from the organism's body. Flame cells are characterized by a tuft of cilia that resembles a flickering flame, which aids in the movement of waste fluids through the excretory system.
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