Mitotically active cells that generate neurons and astrocytes are present in multiple regions of the adult mouse hippocampus
Why this work is in the frame
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Bibliographic record
Abstract
Previous studies of the adult hippocampus of rodents and primates have reported neuro- and gliogenesis restricted to the region of the dentate gyrus. In the present study, by employing a prolonged bromodeoxyuridine (BrdU) labeling protocol that attempts to account for cytokinetic changes as an animal ages, we have identified mitotically active cells in multiple regions of the hippocampus, especially in Ammon's horn, of the adult mouse. Immediately following the labeling period, the BrdU-labeled cells did not express known markers for neurons and astrocytes. Subsequent analysis at 3-24 weeks after labeling demonstrated BrdU-labeled neurons and glia in these regions of the hippocampus. Although neuro- and gliogenesis in the adult mammalian hippocampus have been reported previously, these results demonstrate that the phenomenon is not limited to the region of the dentate gyrus, but rather extends into Ammon's horn. Furthermore, it suggests that ongoing cell production, albeit discrete and limited in nature, may be widespread in the adult mammalian central nervous system.
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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 | 0.000 |
| Science and technology studies | 0.000 | 0.001 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.001 | 0.000 |
| Research integrity | 0.000 | 0.001 |
| 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