# PubMed record PMID 42557738

> PeptideScanner retained PubMed bibliographic metadata for PMID 42557738 at 2026-08-10T10:49:13.006Z. PubMed recorded a metadata revision date of 2026-08-08 and an Entrez history date of 2026-08-06. PeptideScanner associated this retained record with the identity slug glucagon. These dates describe PubMed metadata history, not the article's original publication date.

- Evidence object: `story:pubmed-pmid-42557738-glucagon:v1`
- Evidence domain: Literature metadata
- Date in source: 2026-08-08
- Source checked: 2026-08-10
- Published by PeptideScanner: 2026-08-10
- Story landing page: https://peptidescanner.com/stories/pubmed-pmid-42557738-glucagon/
- JSON record: https://peptidescanner.com/evidence/v1/objects/pubmed-pmid-42557738-glucagon-v1.json
- Content SHA-256: `a4d20f1e4de4e553294b53dcb80c33c573654d8e876a0b2bcddf8f1f28b35b92`

## Claims and source pins

### Headline

PubMed record PMID 42557738 ([`pubmed-observation-pmid-42557738-2026-08-08-f2b13d731975`](#source-pubmed-observation-pmid-42557738-2026-08-08-f2b13d731975))

### Summary

PeptideScanner retained PubMed bibliographic metadata for PMID 42557738 at 2026-08-10T10:49:13.006Z. PubMed recorded a metadata revision date of 2026-08-08 and an Entrez history date of 2026-08-06. PeptideScanner associated this retained record with the identity slug glucagon. These dates describe PubMed metadata history, not the article's original publication date. ([`pubmed-observation-pmid-42557738-2026-08-08-f2b13d731975`](#source-pubmed-observation-pmid-42557738-2026-08-08-f2b13d731975))

### Paragraph 1

PeptideScanner retained PubMed bibliographic metadata for PMID 42557738 at 2026-08-10T10:49:13.006Z. PubMed recorded a metadata revision date of 2026-08-08 and an Entrez history date of 2026-08-06. PeptideScanner associated this retained record with the identity slug glucagon. These dates describe PubMed metadata history, not the article's original publication date. ([`pubmed-observation-pmid-42557738-2026-08-08-f2b13d731975`](#source-pubmed-observation-pmid-42557738-2026-08-08-f2b13d731975))

### Paragraph 2

This page reports retained PubMed bibliographic metadata. It does not summarize the article, establish the article's publication date, or assert safety, efficacy, or scientific truth. ([`pubmed-observation-pmid-42557738-2026-08-08-f2b13d731975`](#source-pubmed-observation-pmid-42557738-2026-08-08-f2b13d731975))

## Sources

<a id="source-pubmed-observation-pmid-42557738-2026-08-08-f2b13d731975"></a>
- **PubMed record PMID 42557738 · retained source version 1:2026-08-08:current:f2b13d73197588ff6d43bbd8775bb3b28503a75eeda539a2e91ff68699b0eab2** — PubMed; class A. [Open source](https://pubmed.ncbi.nlm.nih.gov/42557738/) (`pubmed-observation-pmid-42557738-2026-08-08-f2b13d731975`)

## Correction lineage

No correction is recorded for this version.

## Reporting boundaries and unknowns

PeptideScanner reproduces bounded bibliographic metadata attributed to PubMed. It does not summarize or endorse the article's findings.

- Sources outside the selected public PeptideScanner bundle may exist and are not represented by this object.
- This object does not determine whether cited records agree, corroborate one another, or establish scientific truth.
- This object does not determine safety, efficacy, causality, or suitability for any person.

Methodology: https://peptidescanner.com/methodology/
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## Suggested citation

PeptideScanner. "PubMed record PMID 42557738." Version 1, published 2026-08-10. https://peptidescanner.com/evidence/v1/objects/pubmed-pmid-42557738-glucagon-v1.json SHA-256: a4d20f1e4de4e553294b53dcb80c33c573654d8e876a0b2bcddf8f1f28b35b92.