Molecular Size, pH, Temperature Stability, and Ontogeny of Inhibitor(s) of Infectious Pancreatic Necrosis Virus (IPNV) in Normal Rainbow Trout Serum
Bibliographic record
Abstract
Abstract In this study, we investigated the characteristics of inhibitor(s) of infectious pancreatic necrosis virus (IPNV) found in the serum of normal rainbow trout Oncorhynchus mykiss (RTS). The molecular size, stability to pH and temperature, and ontogeny of the inhibitor in trout were studied, and the effect of cations (Ca2+ and Mg2+) on the activity of the inhibitor was tested. The strongest inhibition of virus was obtained at approximately 150 kDa as measured by ultracentrifugation, sieve gel chromatography, and ultrafiltration. The inhibition decreased significantly when RTS was dialyzed or filtered in the absence of divalent cations, but replacement of at least one cation restored activity. Activity was stable at temperatures ranging from 30°C to 50°C, but 55°C completely destroyed the inhibitory capacity of RTS. The inhibitory activity of RTS was not reduced between pH 4 and 10 but was diminished below pH 4 and above pH 10; such activity was not abrogated by proteases. Additionally, pretreatment of RTS with the polysaccharide mannan significantly reduced inhibition. Thus, the serum inhibitor(s) had many characteristics of a lectin. To determine the ontogeny of inhibition, serum samples were taken from normal rainbow trout, beginning at 2 weeks posthatch; consistent inhibition was not obtained until the rainbow trout had reached the age of 23 weeks posthatch.
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How this classification was reachedexpand
Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.001 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.001 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.000 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one teacher head, not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".