Evidence map›Paper›PMID 19303334›Full record

ArticleImmunity2009

Initial clonal expansion of germinal center B cells takes place at the perimeter of follicles.

Francis Coffey, Boris Alabyev, Tim Manser

Abstract read
In one paragraph

Article in Immunity, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 81 papers.

0numbers the graph read from it
0cells of the map it votes in
81citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

81 citing papers in PubMed.

  1. Stress triggers global histone synthesis in the liver.bioRxiv : the preprint server for biology · 2026
    Article
  2. Extrafollicular and other non-germinal center B cell responses.Journal of immunology (Baltimore, Md. : 1950) · 2026
    Review
  3. The multilayered identity of B cell memory.Cellular & molecular immunology · 2026
    Review
  4. Review
  5. Article
  6. Review
  7. Review
  8. Article
  9. Activation of CXCR3Journal of virology · 2025
    Article
  10. Review
  11. Bioavailability, Metabolism, and Excretion of [Clinical pharmacology in drug development · 2025
    Article
  12. Article
  13. Structure and sequence engineering approaches to improve in vivo expression of nucleic acid-delivered antibodies.Molecular therapy : the journal of the American Society of Gene Therapy · 2025
    Article
  14. Article
  15. Article
  16. Article
  17. Immune cells use active tugging forces to distinguish affinity and accelerate evolution.Proceedings of the National Academy of Sciences of the United States of America · 2023
    Article
  18. Article
  19. Review
  20. Article

21 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

3 authors.

Francis CoffeyDepartment of Microbiology and Immunology, Thomas Jefferson University, Philadelphia, PA 19107, USA.
Boris Alabyev
Tim Manser

Funding

Negative Selective of Autoreactive AntibodiesR01AI038965 · NIAID · THOMAS JEFFERSON UNIVERSITY · PI MANSER, TIMOTHY L · 1996 to 2011
$3.2M
Regulation of Persistent Ab Responses by Fc ReceptorsR01AI046806 · NIAID · THOMAS JEFFERSON UNIVERSITY · PI MANSER, TIMOTHY L · 1999 to 2010
$2.9M
NIAID NIH HHS R01 AI038965NIAID NIH HHS R01 AI046806
6 · The paper itself

Abstract

Current models of the germinal center (GC) response propose that after stimulation at the edges of T cell zones, pre-GC B cells directly migrate to the center of follicles and proliferate to form GCs. We followed the interrelationship of proliferation, differentiation, and microenvironmental locale in populations of pre-GC B cells responding to antigen. In contrast to the predictions of current models, after accumulation at the T-B interface, these cells appeared at the perimeter of follicles adjacent to the marginal zone. There, they rapidly proliferated for several days but underwent no V gene hypermutation and little heavy-chain class switching. Their chemokine receptor expression pattern indicated that these cells were sessile, yet they had begun to acquire many phenotypic characteristics of GC B cells. The expanded clones were subsequently observed in the center of follicles, suggesting that GCs are created by coalescence of B cells from this follicular perimeter response.

Indexed as

AnimalsB-LymphocytesCell ProliferationCells, CulturedDendritic Cells, FollicularFlow CytometryFluorescent Antibody TechniqueGene Expression ProfilingGerminal CenterMiceMice, Transgenic

Identifiers

PMID19303334
PMCPMC2716660

What OpenQuestion holds

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Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.