# PubMed record PMID 31809714

> PeptideScanner retained PubMed bibliographic metadata for PMID 31809714 at 2026-07-30T20:34:13.013Z. PubMed recorded a metadata revision date of 2020-01-23 and an Entrez history date of 2019-12-07. PeptideScanner associated this retained record with the identity slug ghk-cu. These dates describe PubMed metadata history, not the article's original publication date.

- Evidence object: `story:pubmed-pmid-31809714-ghk-cu:v1`
- Evidence domain: Literature metadata
- Date in source: 2020-01-23
- Source checked: 2026-07-30
- Published by PeptideScanner: 2026-08-12
- Story landing page: https://peptidescanner.com/stories/pubmed-pmid-31809714-ghk-cu/
- JSON record: https://peptidescanner.com/evidence/v1/objects/pubmed-pmid-31809714-ghk-cu-v1.json
- Content SHA-256: `025b5252d1a075ff9c9aca5fe20bb3b946c6ebe58009f79e3a6b6b82567c4844`

## Claims and source pins

### Headline

PubMed record PMID 31809714 ([`pubmed-observation-pmid-31809714-2020-01-23-6192d59d9a89`](#source-pubmed-observation-pmid-31809714-2020-01-23-6192d59d9a89))

### Summary

PeptideScanner retained PubMed bibliographic metadata for PMID 31809714 at 2026-07-30T20:34:13.013Z. PubMed recorded a metadata revision date of 2020-01-23 and an Entrez history date of 2019-12-07. PeptideScanner associated this retained record with the identity slug ghk-cu. These dates describe PubMed metadata history, not the article's original publication date. ([`pubmed-observation-pmid-31809714-2020-01-23-6192d59d9a89`](#source-pubmed-observation-pmid-31809714-2020-01-23-6192d59d9a89))

### Paragraph 1

PeptideScanner retained PubMed bibliographic metadata for PMID 31809714 at 2026-07-30T20:34:13.013Z. PubMed recorded a metadata revision date of 2020-01-23 and an Entrez history date of 2019-12-07. PeptideScanner associated this retained record with the identity slug ghk-cu. These dates describe PubMed metadata history, not the article's original publication date. ([`pubmed-observation-pmid-31809714-2020-01-23-6192d59d9a89`](#source-pubmed-observation-pmid-31809714-2020-01-23-6192d59d9a89))

### 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-31809714-2020-01-23-6192d59d9a89`](#source-pubmed-observation-pmid-31809714-2020-01-23-6192d59d9a89))

## Sources

<a id="source-pubmed-observation-pmid-31809714-2020-01-23-6192d59d9a89"></a>
- **PubMed record PMID 31809714 · retained source version 1:2020-01-23:current:6192d59d9a896bf9666793594c369ff33966c0d0b068f487db2782d4c14c202f** — PubMed; class A. [Open source](https://pubmed.ncbi.nlm.nih.gov/31809714/) (`pubmed-observation-pmid-31809714-2020-01-23-6192d59d9a89`)

## 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 31809714." Version 1, published 2026-08-12. https://peptidescanner.com/evidence/v1/objects/pubmed-pmid-31809714-ghk-cu-v1.json SHA-256: 025b5252d1a075ff9c9aca5fe20bb3b946c6ebe58009f79e3a6b6b82567c4844.