• Organization: U.S. Department of Health & Human Services
• Updated: 2025-09-06

Background Species of Tetrahymena were grouped into three complexes based on morphological and life history traits: the pyriformis complex of microstomatous forms; the patula complex of...

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• Organization: U.S. Department of Health & Human Services
• Updated: 2025-09-06

Background Ciliates employ massive chromatid breakage and de novo telomere formation during generation of the somatic macronucleus. Positions flanking the 81-MAC locus are reproducibly...

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• Organization: National Oceanic and Atmospheric Administration, Department of Commerce
• Updated: 2014-05-27T00:00:00.000+00:00

Abundances of viruses, prokaryotes, diatoms, dinoflagellates, ciliates and heterotrophic nanoflagellates were determined over time in mesocosm experiments measuring the effects of oil, dispersant...

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• Organization: National Oceanic and Atmospheric Administration, Department of Commerce
• Updated: 2011-06-15T00:00:00.000+00:00

In response to the growing concerns among Native communities about the safety of subsistence shellfish, this project assessed the health risks associated with consuming softshell clams, mussels...

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• Organization: National Oceanic and Atmospheric Administration, Department of Commerce
• Updated: 2024-05-24T00:00:00.000+00:00

Operational objectives were to: (1) collect biological data with 61-cm and 20-cm bongo nets; (2) collect ocean acidification water samples with rosette water sampler; (3) collect underway data...

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• Organization: National Oceanic and Atmospheric Administration, Department of Commerce
• Updated: 2013-03-15T00:00:00.000+00:00

Micro-zooplankton populations in the upper 100 m were sampled from 5 marine environments in the northeast Pacific Ocean extending from slope waters off San Diego to an oceanic site near Isla...

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• Organization: National Oceanic and Atmospheric Administration, Department of Commerce
• Updated: 2011-06-15T00:00:00.000+00:00

In response to the growing concerns among Chugach communities, contaminant body burden and histopathological condition of chum and sockeye salmon (Oncorhynchus keta and Oncorhynchus nerka) and the...

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• Organization: National Oceanic and Atmospheric Administration, Department of Commerce
• Updated: 2023-11-02T00:00:00.000+00:00

Operational objectives are to: (1) collect biological data with bongo plankton nets; (2) collect ocean acidification samples with rosette water sampler; (3) complete CTD and bongo operations at...

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• Organization: National Oceanic and Atmospheric Administration, Department of Commerce
• Updated: 2025-05-15T19:16:15.000+00:00

NOAA Fisheries is a cooperator with the Washington Department of Fish and Wildlife and the Lummi, Nooksack, and Stillaguamish Tribes in a 10-year program to rebuild the South Fork Nooksack River...

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• Organization: U.S. Department of Health & Human Services
• Updated: 2025-09-06

Background: Programmed DNA-reorganization and DNA-elimination events take place frequently during cellular differentiation. An extreme form of such processes, involving DNA...

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