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Related Concept Videos

Cancer02:18

Cancer

Cancers arise due to mutations in genes involved in the regulation of cell division, which leads to unrestricted cell proliferation. Modern science and medicine have made great strides in the understanding and treatment of cancer, including eradicating cancer in some patients. However, there is still no cure for cancer. This is largely due to the fact that cancer is a large group of many diseases.
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A mutation is a change in the sequence of bases of DNA or RNA in a genome. Some mutations occur during replication of the genome due to errors made by the polymerase enzymes that replicate DNA or RNA. Unlike DNA polymerase, RNA polymerase is prone to errors because it is not capable of “proofreading” its work. Viruses with RNA-based genomes, like HIV, therefore accrue mutations faster than viruses with DNA-based genomes. Because mutation and recombination provide the raw material for adaptive...
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The chi-square test is a statistical hypothesis test. It is used to check whether there is a significant difference between an expected value and an observed value. In the context of genetics, it enables us to either accept or reject a hypothesis, based on how much the observed values deviate from the expected values.
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Related Experiment Video

Updated: Jun 24, 2026

Comparing Bibliometric Analysis Using PubMed, Scopus, and Web of Science Databases
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Comparing Bibliometric Analysis Using PubMed, Scopus, and Web of Science Databases

Published on: October 24, 2019

New year, new PubMed.

E Giglia1

  • 1University of Turin, Turin, Italy. elena.giglia@unito.it

European Journal of Physical and Rehabilitation Medicine
|March 19, 2009
PubMed
Summary
This summary is machine-generated.

PubMed

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Area of Science:

  • Biomedical Informatics
  • Medical Library Science

Background:

  • PubMed is a widely recognized interface for accessing biomedical literature.
  • Continuous updates aim to enhance user experience and data accessibility.

Purpose of the Study:

  • To highlight recent enhancements to the PubMed interface.
  • To detail new features for improved literature searching and management.

Main Methods:

  • The study focuses on descriptive analysis of new PubMed features.
  • No experimental methods were employed; it's an overview of interface updates.

Main Results:

  • Introduction of improved results list visualization.
  • A streamlined Advanced Search format consolidating previous options.
  • New functionalities for saving searches and collections via MyNCBI.
  • Enhanced capabilities for personal bibliography creation.

Conclusions:

  • The latest PubMed updates offer significant improvements in search efficiency and data organization.
  • These features aim to provide a more intuitive and powerful user experience for researchers.