Evidence map›Paper›PMID 27840200›Full record

ReviewDevelopmental biology2017

Saunders's framework for understanding limb development as a platform for investigating limb evolution.

John J Young, Clifford J Tabin

Open access · greenAbstract readReview
In one paragraph

Review in Developmental biology, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 16 papers.

0numbers the graph read from it
0cells of the map it votes in
16citing papers in PubMed
0.9field-weighted citation impact, top 23% of its field
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

16 citing papers in PubMed, 20 citations in OpenAlex.

  1. Article
  2. Article
  3. Article
  4. Metamorphosis and lncRNAs: A Close Relationship.Genesis (New York, N.Y. : 2000) · 2026
    Review
  5. Static morphogen scaling enables proportional growth in a tissue growth model inspired by axolotl limb regeneration.Proceedings of the National Academy of Sciences of the United States of America · 2025
    Article
  6. Article
  7. Adaptive evolution ofZoological research · 2025
    Article
  8. Article
  9. Article
  10. Review
  11. Limb positioning and initiation: An evolutionary context of pattern and formation.Developmental dynamics : an official publication of the American Association of Anatomists · 2021
    Review
  12. Non-model systems in mammalian forelimb evo-devo.Current opinion in genetics & development · 2021
    Review
  13. Article
  14. Article
  15. Article
  16. Article
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

2 authors at 1 institution in 1 country.

John J YoungDepartment of Genetics, Harvard Medical School, Boston, MA 02115, USA.
Clifford J TabinDepartment of Genetics, Harvard Medical School, Boston, MA 02115, USA. Electronic address: tabin@genetics.med.harvard.edu.
Harvard University · US

Funding

Hedgehog Signaling and Organogenesis of the LimbR37HD032443 · NICHD · HARVARD UNIVERSITY (MEDICAL SCHOOL) · PI TABIN, CLIFFORD J. · 2005 to 2014
$5.3M
The reprogramming of limb progenitor cellsR01HD032443 · NICHD · HARVARD UNIVERSITY (MEDICAL SCHOOL) · PI CLIFFORD J. TABIN · 1995 to 2026
$4.6M
NICHD NIH HHS R01 HD032443NICHD NIH HHS R37 HD032443
6 · The paper itself

Abstract

John W. Saunders, Jr. made seminal discoveries unveiling how chick embryos develop their limbs. He discovered the apical ectodermal ridge (AER), the zone of polarizing activity (ZPA), and the domains of interdigital cell death within the developing limb and determined their function through experimental analysis. These discoveries provided the basis for subsequent molecular understanding of how vertebrate limbs are induced, patterned, and differentiated. These mechanisms are strongly conserved among the vast diversity of tetrapod limbs suggesting that relatively minor changes and tweaks to the molecular cascades are responsible for the diversity observed in nature. Analysis of the pathway systems first identified by Saunders in the context of animals displaying limb reduction show how alterations in these pathways have resulted in multiple mechanisms of limb and digit loss. Other classes of modification to these same patterning systems are seen at the root of other, novel limb morphological alterations and elaborations.

Indexed as

Biological EvolutionAdaptation, PhysiologicalAnimalsExtremitiesSignal Transduction

Identifiers

PMID27840200
PMCPMC5426996
OpenAlexW2555816384

What OpenQuestion holds

Textmetadata
LicenceTDM
Read underepoch 390

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.