Morphological and Physiological Evidence for a Developmental Cycle in <i>Legionella pneumophila</i>
Why this work is in the frame
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Bibliographic record
Abstract
This chapter focuses on the cyclical nature of some morphological and physiological changes that take place in infected HeLa cells and during growth in vitro. Coverslip cultures of HeLa cells were infected with purified mature intracellular forms (MIFs), and changes in Gimenez staining were followed for up to 3 days. The bacterial strains used throughout these studies were Lp1-SVir and 2064, two virulent strains previously reported and characterized. Cultures with 100% green forms (after Gimenez staining) were identified upon growth of Legionella pneumophila on buffered charcoal-yeast extract (BCYE) plates. Rowbotham reported earlier that infection of amoebae resulted in the formation of small, highly motile, and infectious legionellae that are believed to be equivalent to the HeLa-derived MIFs reported. Purified MIFs were placed in buffered yeast extract (BYE) and their growth was followed through viable cell counts. Researchers concluded that the green forms arising in the BYE cultures were replicating bacteria that developed from the MIFs originally used as inoculum. In summary, L. pneumophila undergoes cyclical morphological and physiological changes that suggest the existence of a developmental program.
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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 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.001 | 0.000 |
| 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