Assertion: paramecium | /r/AtLocation | cell-free fluid
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Source sentences:
text: In this regard, another interesting observation was made when Paramecium was placed in a cell-free fluid containing the toxic material derived from the toxicysts from Dileptus [ 45 ] (Miyake A. personal communication); indeed after contact with this toxic solution, Paramecium cells violently reacted by immediately discharging most of their trichocysts before being killed.