Age-Dependent Changes in Antigenic Promotion, A Th-2 Type of Activity
Bibliographic record
Abstract
Help for a secondary response to a determinant can be dependent on previous exposure to other determinants of the macromolecule; it can also be independent of sensitization to such carrier determinants. A helper effect, which is independent of the hapten carrier bridge, can be seen in the indirect plaque-forming response. This Th-2 type of reactivity was observed in tissue culture with spleen cells from A/J and C57BL/6 mice, immunized with various macromolecules. The spleen cells of these mice were exposed in tissue culture to the sensitizing macromolecule and to antigens conjugated to a macromolecule which was structurally unrelated to the sensitizing macromolecule. Sensitization of the spleen cell donor with the hapten was not required for this help to be given if the hapten was 2,4-dinitrophenyl, but was required when the hapten was p-azobenzene sulfonic acid. The age, at which the Th-2 helper effect was first seen, shows polymorphism. The effect was detected well after sexual maturity, and 50% of the final value was reached only when the animal had passed the 20th week of its life. The variation in age of detectable Th-2 capacity depended on the nature of the hapten; with 2,4-dinitrophenyl, as the hapten, A/J and C57BL/6J differed very little in the age at which the Th-2 capacity became detectable; with p-azobenzene sulfonic acid the Th-2 capacity was detectable at a much later age in A/J than in C57BL/6 mice.
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.
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 | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.001 |
| Insufficient payload (model declined to judge) | 0.003 | 0.001 |
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".