Development of a Virulent Avian Infectious Bronchitis Virus(IBV) Causing Proventriculus Lesions
Bibliographic record
Abstract
After 10 passages through 1 day old SPF chicks with IBV D971,a virulent strain IBV D971J was developed.The virulence of the passage 10 IBV D971J(IBV D971J 10 ) was up to 10 -6.45 ELD 50 /0.2 mL or 10 -1.5 LD 50 /mL in 1 day old SPF chicks.IBV,but not NDV,AIV,MDV,IBDV or REV,was re isolated from heart,liver,spleen,lung,kidney,proventriculus,muscle ventriculus and Fabricus bursa of the inoculated chicks.Typical pathological changes,proventriculustis,muscle ventriculus inflammation and interstitial nephritis were observed in the IBV D971J inoculated chicks.
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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 | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.001 |
| Science and technology studies | 0.001 | 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) | 0.001 | 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".