Student or educator? Sign up with your school email and get 6 months of Pro free.
Cited by 280

The DOI matches its Crossref record; 5 of the 5 references it cites were found in a registry or an index.

Birth of normal young after electrofusion of mouse oocytes with round spermatids.

Open access
Ogura, A, Matsuda, J, Yanagimachi, R·1994·Proceedings of the National Academy of Sciences

Abstract

Normally, round spermatids, the youngest male germ cells with a set of haploid chromosomes, cannot fertilize mature oocytes. However, when mouse spermatids were fused with oocytes, some of the resulting zygotes developed into normal fertile mice of either sex. This demonstrates that the nuclei of spermatids can provide the paternally imprinted chromosomes needed for full embryonic development and also that the complex postmeiotic modifications involved in sperm formation in the testis and their maturation in the epididymis merely serve to facilitate natural delivery of the paternal genome. This finding may find an application in the treatment of male infertility due to defective spermiogenesis/sperm maturation.

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 · 10.1073/pnas.91.16.7460

Cites

5 of 5 references verified0 citation errors · 0 not checkable

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

Cites

Show all 5 references

Cited by

See all 280

Metadata

Authors
Ogura, A., Matsuda, J., & Yanagimachi, R.
Venue
Proceedings of the National Academy of Sciences
Published
1994-08-02
Volume
91
Issue
16
Pages
7460-7462
ISSN
  • 0027-8424 (ISSN-L)
  • 1091-6490
OpenAlex
W2023044209
Cited by
280
References
5
FWCI
22.40
Type
journal article
Language
en
Open access
green

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: Birth of normal young after electrofusion of mouse oocytes with round spermatids. https://app.cochat.ai/papers/10.1073/pnas.91.16.7460
The paper
Ogura, A., Matsuda, J., & Yanagimachi, R. (1994). Birth of normal young after electrofusion of mouse oocytes with round spermatids. Proceedings of the National Academy of Sciences. https://doi.org/10.1073/pnas.91.16.7460

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.