Student or educator? Sign up with your school email and get 6 months of Pro free.
CoChat
Sign Up
Cited by 267

The DOI matches its Crossref record.

A HIGHLY SENSITIVE IN VITRO BIOASSAY FOR LUTEINIZING HORMONE AND CHORIONIC GONADOTROPIN: TESTOSTERONE PRODUCTION BY DISPERSED LEYDIG CELLS.

Dufau, Maria L., Mendelson, Carole R., Catt, Kevin J.·1974·The Journal of Clinical Endocrinology & Metabolism
DOI 10.1210/jcem-39-3-610
Open this paper in CoChat — free account

Abstract

The in vitro bioassay for LH/hCG employing isolated rat testes has been significantly improved by utilization of collagenase-dispersed interstitial cells in the presence of phosphodiesterase inhibitors. The sensitivity of the assay system has been extended to 20μIU (2 picograms) of hCG, and the index of precision of the method (λ) is less than 0.04. The high sensitivity of the interstitial cell assay permits bioassay of circulating gonadotropins in human plasma.

Overview

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Integrity signals

Registry

Crossref · 10.1210/jcem-39-3-610

Cites

Statistics

Verification

Claims the paper makes

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Self-check

Percentages, sums and reported differences re-computed from the paper’s own numbers.

The self-check needs the paper’s full text.

Citations

Cited by

See all 267

Metadata

Authors
Dufau, M. L., Mendelson, C. R., & Catt, K. J.
Venue
The Journal of Clinical Endocrinology & Metabolism
Publisher
The Endocrine Society
Published
1974-09
Volume
39
Issue
3
Pages
610-613
ISSN
  • 0021-972X (ISSN-L)
  • 1945-7197
DOI
10.1210/jcem-39-3-610
OpenAlex
W2015213958
Cited by
267
References
0
FWCI
7.78
Type
journal article
Language
en
Open access
closed

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

Are you an author, or do you see a problem with this page? Request a review

How to cite

Cite CoChat for the checks on this page, and the paper for its own findings.

This page
CoChat. (2026). Citation check: A HIGHLY SENSITIVE IN VITRO BIOASSAY FOR LUTEINIZING HORMONE AND CHORIONIC GONADOTROPIN: TESTOSTERONE PRODUCTION BY DISPERSED LEYDIG CELLS. https://app.cochat.ai/papers/10.1210/jcem-39-3-610
The paper
Dufau, M. L., Mendelson, C. R., & Catt, K. J. (1974). A HIGHLY SENSITIVE IN VITRO BIOASSAY FOR LUTEINIZING HORMONE AND CHORIONIC GONADOTROPIN: TESTOSTERONE PRODUCTION BY DISPERSED LEYDIG CELLS. The Journal of Clinical Endocrinology & Metabolism. https://doi.org/10.1210/jcem-39-3-610

Data sources

Bibliographic data: Semantic Scholar, OpenAlex, Crossref.

Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).

Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.