---
title: "PMID 22137474: No PMCID Assigned → DOI 10.1016/j.cub.2011.10.054 | Scholar Sidekick"
description: "PMID 22137474 has no PMCID — this paper is not deposited in PubMed Central; its DOI is 10.1016/j.cub.2011.10.054. No retraction found. A free, legal copy is available. Checked 2026-08-13."
doc_version: "1.0"
last_updated: "2026-08-13"
---

# PMID 22137474: no PMCID assigned

> HTML version: https://scholar-sidekick.com/tools/pubmed-id-converter/22137474
> Last updated: 2026-08-13

LIN-42/PERIOD controls cyclical and developmental progression of C. elegans molts. — Current biology : CB (2011)

## Identifier mapping

- **PMID:** 22137474 — [PubMed record](https://pubmed.ncbi.nlm.nih.gov/22137474/)
- **PMCID:** Not assigned — this paper is not deposited in PubMed Central
- **DOI:** 10.1016/j.cub.2011.10.054 — [Resolve](https://doi.org/10.1016/j.cub.2011.10.054)

A missing PMCID is a real answer, not a lookup failure: it means the full text has not been deposited in PubMed Central. For NIH grant reporting, this paper cannot be cited with a PMCID — use the DOI above instead.

## Formatted citation (Vancouver)

```
Monsalve G, Van BC, Frand A. LIN-42/PERIOD controls cyclical and developmental progression of C. elegans molts. Curr Biol. 2011;21(24):2033-2045. doi:10.1016/j.cub.2011.10.054.
```

Need APA, AMA, or one of 10,000+ other styles? Use the [Citation Style Comparator](https://scholar-sidekick.com/tools/citation-style-comparator) or the [citation formatter](https://scholar-sidekick.com/).

## Integrity & access status

- **Retraction:** No retraction found (Crossref, checked 2026-08-13)
- **Open access:** Open access (bronze) (Unpaywall, checked 2026-08-13)
- [Read the free, legal copy](https://doi.org/10.1016/j.cub.2011.10.054)

Re-check live with the [Retraction Checker](https://scholar-sidekick.com/tools/retraction-checker) or the [Open Access Checker](https://scholar-sidekick.com/tools/open-access-checker).

## About this page

This is a snapshot answer for one identifier, generated from the NCBI ID Converter, Crossref, and Unpaywall on 2026-08-13. To convert any other PMID, PMCID, or DOI, use the [PubMed ID Converter](https://scholar-sidekick.com/tools/pubmed-id-converter). To check whether a citation is real, use the [Citation Verifier](https://scholar-sidekick.com/tools/citation-verifier).

## Sitemap

See the full [sitemap](https://scholar-sidekick.com/sitemap.md) for all pages.