Thymus-Derived Signals Regulate Early T-Cell Development
Bibliographic record
Abstract
T cells develop in the thymus from uncommitted progenitors under the influence of multiple soluble and membrane-associated factors that regulate the migration, survival, proliferation, and differentiation of progenitor thymocytes. The role of cytokines such as stem cell factor and IL-7 in this process is well established. However, several recent studies have demonstrated an important role for other soluble factors in T-cell development, including WNTs, bone morphogenetic proteins, and Hedgehog proteins. Other studies have clarified how chemokines regulate the migration of progenitor thymocytes at various stages of development. Furthermore, the Notch pathway has emerged as the critical inducer of T-lineage commitment and differentiation, and Notch ligands expressed by the thymic stroma likely provide essential developmental cues throughout early T-cell development. In this review, we discuss recent advances in our understanding of how thymus-derived signals regulate early T-cell development.
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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) | 0.001 | 0.000 |
| Meta-epidemiology (broad) | 0.001 | 0.000 |
| Bibliometrics | 0.001 | 0.001 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.001 | 0.001 |
| Open science | 0.001 | 0.000 |
| Research integrity | 0.001 | 0.001 |
| Insufficient payload (model declined to judge) | 0.002 | 0.004 |
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".