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Related Concept Videos

Correlations02:20

Correlations

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Correlation means that there is a relationship between two or more variables (such as ice cream consumption and crime), but this relationship does not necessarily imply cause and effect. When two variables are correlated, it simply means that as one variable changes, so does the other. We can measure correlation by calculating a statistic known as a correlation coefficient. A correlation coefficient is a number from -1 to +1 that indicates the strength and direction of the relationship between...
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Correlation and Causation01:27

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Statistical tests can calculate whether there is a relationship, or correlation, between independent and dependent variables. An indirect relationship of the variables signifies a correlation, while a direct relationship shows causation. If it is determined that no connection exists between the variables, then the correlation is a coincidence.
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Acids, Bases and Neutralization Reactions03:26

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An acid-base reaction is one in which a hydrogen ion, H+, is transferred from one chemical species to another. Such reactions are of central importance to numerous natural and technological processes, ranging from the chemical transformations within cells or lakes and oceans to the industrial-scale production of fertilizers, pharmaceuticals, and other substances essential to the society.
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Acids, Bases and Neutralization Reactions01:27

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Acids and bases play several important roles in biology. The pH of a biological system can significantly impact the function of biological molecules, including enzymes, proteins, and nucleic acids. For example, enzymes have optimal pH ranges for their activity, and changes in pH can denature or alter their structure, affecting their function. Acids and bases also play a crucial role in cellular signaling and communication. The pH of the extracellular fluid around cells can influence the...
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Correlation01:09

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In statistics, two variables are said to be correlated if the values of one variable are associated with the other variable. Depending on the relationship between two variables, correlation can be of three types– positive correlation, negative correlation, and zero correlation.
Two variables, for example, a and b, are said to be positively correlated if both variables move in the same direction. In other words, a positive correlation exists between two variables, a and b, if:
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Antibody Structure01:10

Antibody Structure

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Overview
Antibodies, also known as immunoglobulins (Ig), are essential players of the adaptive immune system. These antigen-binding proteins are produced by B cells and make up 20 percent of the total blood plasma by weight. In mammals, antibodies fall into five different classes, which each elicits a different biological response upon antigen binding.
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Related Experiment Video

Updated: Jan 24, 2026

Generation of Escape Variants of Neutralizing Influenza Virus Monoclonal Antibodies
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Correlates of broadly neutralizing antibody development.

Irene A Abela1, Claus Kadelka2, Alexandra Trkola1

  • 1Institute of Medical Virology, University of Zurich, Zurich, Switzerland.

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Inducing broadly neutralizing antibodies (bnAbs) for an effective HIV-1 vaccine remains challenging. Understanding factors influencing bnAb development in natural infection is crucial for guiding future vaccine design.

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Area of Science:

  • Immunology
  • Virology
  • Vaccinology

Background:

  • Broadly neutralizing antibodies (bnAbs) are critical for an effective HIV-1 vaccine.
  • Induction of bnAbs via vaccination has not yet been achieved.
  • Understanding factors influencing bnAb evolution is essential for vaccine development.

Purpose of the Study:

  • To review recent discoveries on correlates of bnAb development.
  • To discuss insights needed for advancing bnAb vaccine design.

Main Methods:

  • Review of recent scientific literature on HIV-1 bnAb development.
  • Analysis of immune factors and viral envelope signatures associated with bnAb evolution.

Main Results:

  • Multiple immune factors and viral envelope characteristics influence bnAb development.
  • Various pathways exist for bnAb induction and maturation in natural infection.

Conclusions:

  • Further research is needed to validate factors driving bnAb induction.
  • Identifying independent drivers of bnAb induction is key for future vaccine design.