# PubMed record PMID 4224451

> PeptideScanner retained PubMed bibliographic metadata for PMID 4224451 at 2026-07-30T23:04:35.979Z. PubMed recorded a metadata revision date of 2003-11-14 and an Entrez history date of 1966-01-01. 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-4224451-glucagon:v1`
- Evidence domain: Literature metadata
- Date in source: 2003-11-14
- Source checked: 2026-07-30
- Published by PeptideScanner: 2026-08-10
- Story landing page: https://peptidescanner.com/stories/pubmed-pmid-4224451-glucagon/
- JSON record: https://peptidescanner.com/evidence/v1/objects/pubmed-pmid-4224451-glucagon-v1.json
- Content SHA-256: `d1008a3912bb348ea4b21936e007b74a1fd5b31f959af948f286e0e1a24276d6`

## Claims and source pins

### Headline

PubMed record PMID 4224451 ([`pubmed-observation-pmid-4224451-2003-11-14-413273863a20`](#source-pubmed-observation-pmid-4224451-2003-11-14-413273863a20))

### Summary

PeptideScanner retained PubMed bibliographic metadata for PMID 4224451 at 2026-07-30T23:04:35.979Z. PubMed recorded a metadata revision date of 2003-11-14 and an Entrez history date of 1966-01-01. 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-4224451-2003-11-14-413273863a20`](#source-pubmed-observation-pmid-4224451-2003-11-14-413273863a20))

### Paragraph 1

PeptideScanner retained PubMed bibliographic metadata for PMID 4224451 at 2026-07-30T23:04:35.979Z. PubMed recorded a metadata revision date of 2003-11-14 and an Entrez history date of 1966-01-01. 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-4224451-2003-11-14-413273863a20`](#source-pubmed-observation-pmid-4224451-2003-11-14-413273863a20))

### 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-4224451-2003-11-14-413273863a20`](#source-pubmed-observation-pmid-4224451-2003-11-14-413273863a20))

## Sources

<a id="source-pubmed-observation-pmid-4224451-2003-11-14-413273863a20"></a>
- **PubMed record PMID 4224451 · retained source version 1:2003-11-14:current:413273863a205d23ef297552b5a4313a791574cab9029d9122b8593270220cbf** — PubMed; class A. [Open source](https://pubmed.ncbi.nlm.nih.gov/4224451/) (`pubmed-observation-pmid-4224451-2003-11-14-413273863a20`)

## 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/
Medical disclaimer: https://peptidescanner.com/medical-disclaimer/

## Suggested citation

PeptideScanner. "PubMed record PMID 4224451." Version 1, published 2026-08-10. https://peptidescanner.com/evidence/v1/objects/pubmed-pmid-4224451-glucagon-v1.json SHA-256: d1008a3912bb348ea4b21936e007b74a1fd5b31f959af948f286e0e1a24276d6.