Cell line · CVCL_M665
MA-1 [Human contaminated lymphoma]
Cancer cell line, Homo sapiens. Diffuse large B-cell lymphoma germinal center B-cell type. Cellosaurus records it as contaminated. 5 papers.
4 sourcescell-lines-2026-11-14-0.1.0
Cite this record
ConductScience Library. MA-1 [Human contaminated lymphoma]. Cell lines, record CVCL_M665. Release cell-lines-2026-11-14-0.1.0, 14 Nov 2026. https://conductscience.org/library/cell-lines/CVCL_M665
On this page
Cell line
As Cellosaurus gives it.
- Name
- MA-1 [Human contaminated lymphoma]
- Accession
- CVCL_M665
- RRID
- RRID:CVCL_M665
- Synonyms
- Ma-1
- Species
- Homo sapiens (Human)
- Sex
- Male
- Age at sampling
- Adult
- Category
- Cancer cell line
- Diseases
- Diffuse large B-cell lymphoma germinal center B-cell type (NCIt C36080); Diffuse large B-cell lymphoma (ORDO Orphanet_544)
- Derived from
- Pleural effusion (in situ)
- Cell type
- B-cell
- Parent
- Pfeiffer (CVCL_3326)
- Entry created
- 2013-11-05
- Entry updated
- 2025-04-10
Source Cellosaurus
Problems1
| Problem | Cellosaurus's note |
|---|---|
| Contaminated | Shown to be a Pfeiffer derivative (PubMed=23907998) and not a mucosa-associated lymphoid tissue (MALT) lymphoma cell line. This finding is disputed by the original authors (PubMed=24285409). |
Source Cellosaurus
Papers5
| Paper | Journal | Year | How we know | Retracted | Source |
|---|---|---|---|---|---|
Beware imposters: MA-1, a novel MALT lymphoma cell line, is misidentified and corresponds to Pfeiffer, a diffuse large B-cell lymphoma cell line-A reply: despite the same 8-code STR, MA-1 and Pfeiffer are cytogenetically diverse. | Genes Chromosomes Cancer | 2014 | Cellosaurus cites it | PubMed | |
| Beware imposters: MA-1, a novel MALT lymphoma cell line, is misidentified and corresponds to Pfeiffer, a diffuse large B-cell lymphoma cell line. | Genes Chromosomes Cancer | 2013 | Cellosaurus cites it | PubMed | |
| No evidence of IGH-MALT1 translocation in the Ma-1 cell line. | Genes Chromosomes Cancer | 2013 | Cellosaurus cites it | PubMed | |
| No evidence of IGH-MALT1-translocation in the Ma-1 cell line--a reply. | Genes Chromosomes Cancer | 2013 | Cellosaurus cites it | PubMed | |
| Establishment of a novel MALT lymphoma cell line, ma-1, from a patient with t(14;18)(q32;q21)-positive Helicobacter pylori-independent gastric MALT lymphoma. | Genes Chromosomes Cancer | 2011 | Cellosaurus cites it | PubMed |
Relatives1
| Relation | Cell line | Accession | Problem |
|---|---|---|---|
| Parent | Pfeiffer | CVCL_3326 |
Source Cell lines
Cell banks0
None in this release.
Data dates
The date of each source this release read.
Sources 4
- CellosaurusCC BY 4.0, with credit to Cellosaurus (SIB)
- PubMed Central's articlesTitles shown only for CC0, CC BY and public domain articles
- NLM's PMC Article DatasetsCourtesy of NLM, which does not endorse this database
- PubMedNLM's terms
Each source's terms
- CellosaurusCC BY 4.0. Cellosaurus's README: "we have chosen to apply the Creative Commons Attribution 4.0 International (CC BY 4.0) license to Cellosaurus (https://creativecommons.org/licenses/by/4.0/). This means that you are free to copy and redistribute Cellosaurus in any medium or format. You can remix, transform, and build upon Cellosaurus for any purpose, even commercially. You must give appropriate credit, provide a link to the license, and indicate if changes were made." Copyright (c) CALIPHO group, SIB Swiss Institute of Bioinformatics. Read on 14 Nov 2026 at https://ftp.expasy.org/databases/cellosaurus/README
- PubMed Central's articlesEach article's own license. Its words show only under CC0, CC BY or public domain
- NLM's PMC Article DatasetsNLM's PMC Article Datasets on AWS, https://registry.opendata.aws/ncbi-pmc. Its terms: users "acknowledge NLM as the source of the data in a clear and conspicuous manner", do not use the PubMed Central wordmark or the PMC logo, do not "indicate or imply that NLM/NIH/HHS has endorsed" a product, and "only distribute data that are licensed for redistribution". Each article keeps its own license: https://pmc.ncbi.nlm.nih.gov/about/copyright/
- PubMedNLM's terms
Cellosaurus, SIB Swiss Institute of Bioinformatics, https://www.cellosaurus.org, CC BY 4.0. Its problem notes are given in its own words.
For software
Read this cell line from software.
The record and each of its lists are JSON, twenty rows a page. No key.
GET https://conductscience.org/api/cell-lines/v1/CVCL_M665
GET https://conductscience.org/api/cell-lines/v1/CVCL_M665/problems