Reply to: Lactobacillus species do not produce 1-acetyl-β-carboline
Why this work is in the frame
A frame that forgets how it found something cannot be audited. These are the routes that admitted this work.
Bibliographic record
Abstract
In our previous study 1 , we reported the identification of 1-acetyl-β-carboline (1-ABC) in MRS culture medium conditioned by the growth of probiotic lactobacilli under anaerobic conditions. Most importantly, we found that both the conditioned MRS medium and pure, laboratory-synthesized 1-ABC inhibited filamentation, a key virulence trait, in the human fungal pathogen Candida albicans 1 . MRS medium, which had not been conditioned by growth of lactobacilli, did not inhibit filamentation. Now, Herraiz et al. report that the presence of 1-ABC in culture medium is not due to its biosynthesis by lactobacilli 2 . Instead, they find that 1-ABC appears to be generated by spontaneous chemical reactions resulting from heating during the preparation of the medium (autoclave sterilization) and subsequently enhanced by acidification of the medium caused by the growth of lactobacilli.
Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.
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 | 0.001 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.002 | 0.001 |
| Research integrity | 0.002 | 0.003 |
| 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 it