Evidence map›Paper›PMID 32256293›Full record

ArticleGrana2020

The single-grain method: adding TEM to the equation.

Silvia Ulrich, Friđgeir Grímsson

Abstract read
In one paragraph

Article in Grana, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers.

0numbers the graph read from it
0cells of the map it votes in
10citing 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

10 citing papers in PubMed.

  1. Article
  2. Ultrastructural Analysis ofPlants (Basel, Switzerland) · 2025
    Article
  3. Article
  4. Article
  5. Barremian tricolpate pollen from Portugal-New evidence for the age of eudicot-related angiosperms.Proceedings of the National Academy of Sciences of the United States of America · 2025
    Article
  6. Article
  7. Article
  8. Article
  9. Ecology and evolution · 2021
    Article
  10. Review
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.

Silvia UlrichDepartment of Botany and Biodiversity Research, University of Vienna, Vienna, Austria.ORCID 0000-0003-4594-3566
Friđgeir GrímssonDepartment of Botany and Biodiversity Research, University of Vienna, Vienna, Austria.ORCID 0000-0002-1874-6412

Funding

Austrian Science Fund FWF P 29501
6 · The paper itself

Abstract

An advanced protocol to prepare single extant and fossil pollen grains for transmission electron microscopy (TEM) analysis allows for the fast recovery of data on the ultrastructure of pollen/spores. The protocol is easy to apply and less time consuming than previous methods. The 'loss' of pollen grains and pollen that is 'difficult to locate' within the embedding material is avoided, and each single pollen grain can be prepared successfully for TEM analysis. This preparation method is meant as an addition to the single-grain method using combined light and scanning electron microscopy to investigate dispersed fossil pollen grains developed by Dr Reinhard Zetter in the late 1980s.

Indexed as

fossil pollenlight microscopypollen morphologypollen ultrastructurescanning electron microscopytransmission electron microscopy

Identifiers

PMID32256293
PMCPMC7077360

What OpenQuestion holds

Textmetadata
LicenceCC BY
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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.