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Histomorphometry of dominant and subordinate bovine ovarian follicles

2000· article· en· W2073254754 on OpenAlexafffund
Jaswant Singh

Bibliographic record

VenueThe Anatomical Record · 2000
Typearticle
Languageen
FieldAgricultural and Biological Sciences
TopicReproductive Physiology in Livestock
Canadian institutionsUniversity of Saskatchewan
FundersNatural Sciences and Engineering Research Council of Canada
KeywordsFollicular phaseFollicleOvulationOvaryInternal medicineEndocrinologyBiologyMedullaAndrologyAnatomyHormoneMedicine

Abstract

fetched live from OpenAlex

The study was designed to quantitatively characterize the histomorphological attributes of dominant and subordinate follicles in relation to follicular wave dynamics. Heifers (n = 27) were examined daily using ultrasonography to record the growth of individual follicles from 2 days before ovulation until the day of ovariectomy to obtain growing (n = 7), early static (n = 6), late static (n = 6) and regressing (n = 5) phase anovulatory dominant follicles of Wave 1, as well as preovulatory (n = 6) and subordinate (n = 42) follicles. The wall thickness of Wave 1 dominant follicles decreased dramatically (P < 0.01) during the late-static (60.2 +/- 4. 3 microm) and regressing (41.8 +/- 4.3 microm) phases compared to earlier phases. Cells of the granulosa layer of the dominant follicle of Wave 1 became loose during the late-static phase, with an increase (P < 0.001) in number of degenerating cells. Dominant follicles of Wave 1 were lined by fibroblast-like flattened cells during the regressing phase. One day after wave emergence (i.e., before selection), the three largest follicles of the wave were histomorphologically indistinguishable. The wall of the preovulatory follicle close to the medulla of the ovary was thicker (P < 0.01) than the wall facing the ovarian surface. The wall of subordinate follicles was thinner (P < 0.01) and had a lower mitotic index (P < 0.01) than that of their dominant counterparts 3 days and 6 days after wave emergence. In summary, follicular status, ascribed by ultrasonography, was associated with quantitatively distinct histomorphological characteristics. Morphometric changes in the dominant follicle during immature, mature, and post-mature phases were similar to, but occurred later than, those of subordinate follicle. The dominant follicles of Wave 1 entered histological atresia at the time of emergence of Wave 2.

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 distilled prediction

Teacher imitation

Not 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.

metaresearch head score (Codex)0.000
metaresearch head score (Gemma)0.000
Version: codex-gemma-dda1882f352aValidation status: machine_predicted_unvalidated
Candidate categoriesnone
Consensus categoriesnone
DomainCandidate signal: none · Consensus signal: none
Study designCandidate signal: Observational · Consensus signal: none
GenreCandidate signal: Empirical · Consensus signal: Empirical
Teacher disagreement score0.921
Threshold uncertainty score0.835

Codex and Gemma teacher scores by category

CategoryCodexGemma
Metaresearch0.0000.000
Meta-epidemiology (narrow)0.0000.000
Meta-epidemiology (broad)0.0000.000
Bibliometrics0.0000.000
Science and technology studies0.0000.000
Scholarly communication0.0000.000
Open science0.0000.000
Research integrity0.0000.000
Insufficient payload (model declined to judge)0.0010.000

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.

Opus teacher head0.013
GPT teacher head0.220
Teacher spread0.207 · how far apart the two teachers sit on this one work
Validation statusscore_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from it

Classification

machine, unvalidated

Machine predicted; a candidate call from one teacher head, not a consensus.

The models applied no category: nothing in the taxonomy fit this work.
Study designObservational
Domainnot available
GenreEmpirical

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".

Quick stats

Citations44
Published2000
Admission routes2
Has abstractyes

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