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Related Concept Videos

Self-Presentation01:25

Self-Presentation

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Self-presentation is a fundamental aspect of social interaction, shaping both how others perceive individuals and how they view themselves. This dynamic process influences behaviors in various social settings, often leading people to adjust their appearance, speech, and demeanor to align with their desired identity. While self-presentation can be deliberate or unconscious, it plays a critical role in interpersonal relationships and self-perception.Forms of Self-PresentationSelf-presentation can...
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Strategies of Self-Presentation I: Strategic Self-Presentation01:12

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Strategic self-presentation refers to individuals' intentional efforts to influence how others perceive them. This process is employed in various social and professional settings, such as job interviews, dating, politics, and legal contexts, where individuals seek to shape impressions to gain social or material advantages. While people generally present themselves in ways that align with their authentic characteristics, external factors, such as cognitive load, can hinder their ability to...
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Processes of Self-Presentation01:29

Processes of Self-Presentation

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Effective self-presentation is a central component of social interaction and identity construction. It relies on the dynamic processes of defining the situation and engaging in self-disclosure. These mechanisms help individuals navigate social context expectations and manage how others perceive them, fostering mutual understanding and relationship development.Defining the SituationSocial situations are shaped by collectively understood frames—a set of widely understood rules or...
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Strategies of Self-Presentation II: Self-Verification01:17

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Self-verification is a fundamental psychological drive wherein individuals seek affirmation of their self-concept from others, striving for consistency between their internal self-view and external perceptions. This drive operates even when the self-concept is negative, influencing interpersonal behavior and feedback preferences in complex and often counterintuitive ways. Unlike the self-enhancement motive, which seeks positive evaluations, self-verification prioritizes coherence and...
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Diversity of Antigen Receptors01:28

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Antigen receptors are essential components of the immune system crucial in defending the body against foreign invaders. These receptors are present on the surface of B and T cells, enabling them to recognize antigens and mount an appropriate immune response.
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Self-Presentation: Self-Monitoring and Self-Handicapping02:05

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People can go to great lengths to protect their self-image and present themselves in ways that they want others to see them. Sociologist Erving Goffman presented the idea that a person is like an actor on a stage. Calling his theory dramaturgy, Goffman believed that we use “impression management” to present ourselves to others as we hope to be perceived. Each situation is a new scene, and individuals perform different roles depending on who is present (Goffman, 1959). Think about...
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Related Experiment Video

Updated: Feb 12, 2026

Immunopeptidomics: Isolation of Mouse and Human MHC Class I- and II-Associated Peptides for Mass Spectrometry Analysis
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Diversity in MHC class II antigen presentation.

John H Robinson1, Alexei A Delvig

  • 1Department of Microbiology and Immunology, The Medical School, University of Newcastle upon Tyne, Newcastle upon Tyne, UK. j.h.robinson@ncl.ac.uk

Immunology
|March 29, 2002
PubMed
Summary
This summary is machine-generated.

Antigen-presenting cells (APCs) process proteins for T cell recognition via major histocompatibility complex (MHC) molecules. Variations in this process create diverse peptide displays, impacting immune responses, autoimmunity, and tolerance.

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Area of Science:

  • Immunology
  • Cell Biology
  • Molecular Biology

Background:

  • Antigen-presenting cells (APCs) are crucial for acquired immunity by presenting antigens to T cells.
  • Major histocompatibility complex (MHC) molecules are central to this antigen presentation process.
  • MHC class II presentation to CD4 T cells involves a common pathway with potential variations.

Purpose of the Study:

  • To explore the flexibility and variations in the MHC class II antigen presentation pathway.
  • To understand how diverse peptide repertoires are generated and displayed on APCs.
  • To investigate the implications of this diversity for immune responses, autoimmunity, and tolerance.

Main Methods:

  • Analysis of protein antigen degradation within APCs.
  • Investigation of peptide binding sites to MHC class II molecules.
  • Characterization of the APC surface peptide repertoire.

Main Results:

  • Identified variations in protein antigen degradation location and extent.
  • Demonstrated flexibility in peptide binding to MHC class II molecules.
  • Revealed a diverse peptide repertoire displayed on the APC surface.

Conclusions:

  • Subtle variations in the MHC class II pathway lead to significant flexibility in antigen presentation.
  • The diverse peptide repertoire displayed by APCs has profound implications for immune regulation.
  • Understanding these variations is key to controlling immunity, autoimmunity, and tolerance.