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Description
Didinium captures Paramecium. A moment after initial contact when toxicysts enter Paramecium. The strand of toxicysts can be seen between the two organisms, and Didinium will use the anchored toxicysts to reel in Paramecium to the awaiting proboscis which is opening to accept its prey. Also showing metachronous waves of cilia within the two characteristic ciliary girdles of Didinium nasutum; the waves on Paramecium may be paralyzed due to the effects of the attached toxicysts. This micrograph was taken in 1968 by G. Antipa on a Cambridge Mark IIA operating at 20kV. The negative magnification is 485X. Further details are available at Wessenberg, H. and Antipa, G. 1970. Capture and ingestion of Paramecium by Didinium nasutum. J. Protozool. 17:250-270. Research Data Curation Program, UC San Diego, La Jolla, 92093-0175 (https://lib.ucsd.edu/rdcp) Antipa, Gregory (2021). CIL:40951, Didinium nasutum, Paramecium sp., cell by organism, eukaryotic cell, Eukaryotic Protist, Ciliated Protist. In Cell Image Library. UC San Diego Library Digital Collections. Dataset. https://doi.org/10.6075/J09G5M5N
Type
image
Identifier
ark:/20775/bb22599725
Language
No linguistic content
Subject
Phagocytosis Phagocytosis, engulfment Ciliated Protist Phagocytic cup Eukaryotic cell Eukaryotic Protist Cell surface Cell cortex Cell by organism Oral apparatus Didinium nasutum Paramecium sp Cell Image Library Group ID: 11753
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