The DOI matches its Crossref record.
Extraction of a Highly Potent Penicillin Inactivator from Penicillin Resistant Staphylococci
Abstract
A highly potent penicillin inactivator has been extracted from 7 strains of Staph. aureus (coagulase positive), all of which were naturally penicillin resistant. No such inhibitor was present in extracts of 7 penicillin sensitive strains of Staph. aureus.
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.
Integrity signals
Registry
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.
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
Waves of resistance: Staphylococcus aureus in the antibiotic era
Chambers, H. F., & DeLeo, F. R. (2009) · Nature Reviews Microbiology · doi:10.1038/nrmicro2200 · Cited by 2,718
David, M. Z., & Daum, R. S. (2010) · Clinical Microbiology Reviews · doi:10.1128/cmr.00081-09 · Cited by 1,972
Three Decades of β-Lactamase Inhibitors
Drawz, S. M., & Bonomo, R. A. (2010) · Clinical Microbiology Reviews · doi:10.1128/cmr.00037-09 · Cited by 1,709
β-Lactams and β-Lactamase Inhibitors: An Overview
Bush, K., & Bradford, P. A. (2016) · Cold Spring Harbor Perspectives in Medicine · doi:10.1101/cshperspect.a025247 · Cited by 1,412
Epidemiology of β-Lactamase-Producing Pathogens
Bush, K., & Bradford, P. A. (2020) · Clinical Microbiology Reviews · doi:10.1128/cmr.00047-19 · Cited by 938
Metadata
- Authors
- Kirby, W. M. M.
- Venue
- Science
- Published
- 1944-06-02
- Volume
- 99
- Issue
- 2579
- Pages
- 452-453
- ISSN
- 0036-8075 (ISSN-L)
- 1095-9203
- OpenAlex
- W2019533660
- Cited by
- 502
- References
- 0
- FWCI
- 39.06
- 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: Extraction of a Highly Potent Penicillin Inactivator from Penicillin Resistant Staphylococci. https://app.cochat.ai/papers/10.1126/science.99.2579.452
- The paper
- Kirby, W. M. M. (1944). Extraction of a Highly Potent Penicillin Inactivator from Penicillin Resistant Staphylococci. Science. https://doi.org/10.1126/science.99.2579.452
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.
