An investigation of class 1 integrons and integrase gene in Escherichia coli and Mannheimia haemolytica from beef cattle in Western Canada
Bibliographic record
Abstract
This study examined and characterized class 1 integrons and class 1 integrase-associated genetic elements in 'Escherichia coli' and 'Mannheimia haemolytica' from Canadian beef cattle. Both 'E. coli' and 'M. haemolytica' isolated from beef cattle on four feedlots in Alberta Canada were screened for the presence of the class I integrase gene ('intI1'). All isolates which possessed this gene were further characterized to determine if they contained a typical class 1 integron or an incomplete integron, dubbed 'lonely integrase'. A variety of gene cassettes, gene arrays and variants were identified in 'E. coli'. The genetic environment surrounding the 'lonely integrase' was characterized using cloning and PCR. The 'lonely integrase' structure was shown to contain a duplicated class 1 integrase gene and to be associated with both 'tet'(M) and 'tet'(A). This same structure was observed in the majority of the isolates possessing a 'lonely integrase' .
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How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.002 | 0.002 |
| Science and technology studies | 0.002 | 0.000 |
| Scholarly communication | 0.001 | 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 source (direct Gemma or distilled Codex), 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".