ArticlebioRxiv : the preprint server for biology2026
Morphological and functional characterization of the ptychocyte, a stingless stinging cell.
Article in bioRxiv : the preprint server for biology, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Cnidocytes (stinging cells), unique to cnidarians (corals, anemones, jellyfish), have diversified into distinct types with variable forms and functions. Nematocytes, cnidocytes found in all cnidarians, are used for prey capture and defense. When triggered, a pressurized capsule inside the nematocyte releases a harpoon-like structure attached to a hollow tubule that pierces prey and delivers venom. Ptychocytes, a cnidocyte unique to tube anemones (sister to corals and sea anemones) discharge a long spineless tubule used exclusively to build the tube in which the animal lives. Given that nematocytes and ptychocytes are specialized for different functions, we hypothesized that they might respond to firing cues in different ways. To test this, we examined the morphology, function, and distribution of nematocytes and ptychocytes in the North American Tube Anemone,
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