Molecular Dissection of the Mouse Zona Pellucida: An Electron-Microscopic Perspective Utilizing High-Resolution Colloidal-Gold Labeling Methods
Bibliographic record
Abstract
The zona pellucida (ZP) is an extracellular coat that encloses growing oocytes, ovulated eggs, and preimplantation embryos in mammals. The ZP contains receptors that mediate initial interactions between the sperm and egg and the relative species-specificity during gamete interaction. It also prevents polyspermy and protects the developing embryo prior to implantation. The current model of the organization of mouse ZP depicts this extracellular matrix as an extensive three-dimensional array of long interconnected filaments of a structural repeat. Using high-resolution colloidal-gold labeling methods in combination with specific lectins and monoclonal antibodies against three major ZP glycoproteins, we have characterized the outer and inner mouse ZP during folliculogenesis and shown the modifications of the ZP after ovulation and fertilization. Our immunogold labeling results also indicate the involvement of a vesicular aggregate, a specialized subcellular compartment in the oocyte, in the synthesis and secretion of ZP glycoproteins.
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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) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.001 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.001 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.001 |
| Insufficient payload (model declined to judge) | 0.001 | 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".