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Related Concept Videos

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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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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Formula Mass and Mole Concepts of Compounds02:56

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Formula Mass of Covalent Compounds
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Self-Concept01:19

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Self-concept is the cognitive and emotional understanding individuals hold about their identity. It evolves through various developmental stages, beginning in infancy and maturing as children grow. This concept influences how individuals perceive their abilities, interact with others, and manage challenges throughout life.
Infancy and Emerging Recognition
During infancy, self-concept is virtually nonexistent. Babies do not distinguish themselves as separate entities and often mistake their...
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Related Experiment Video

Updated: Feb 7, 2026

Purification of the Membrane Compartment for Endoplasmic Reticulum-associated Degradation of Exogenous Antigens in Cross-presentation
12:48

Purification of the Membrane Compartment for Endoplasmic Reticulum-associated Degradation of Exogenous Antigens in Cross-presentation

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Current Concepts of Antigen Cross-Presentation.

Maria Embgenbroich1, Sven Burgdorf1

  • 1Life and Medical Sciences (LIMES) Institute, University of Bonn, Bonn, Germany.

Frontiers in Immunology
|August 1, 2018
PubMed
Summary

Dendritic cells use cross-presentation to display antigens on MHC I molecules, crucial for immune responses. This overview explores key pathways and unresolved questions in this complex process.

Keywords:
antigen dislocationantigen processingcross-presentationdendritic cellsendosomes

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Area of Science:

  • Immunology
  • Cell Biology

Background:

  • Dendritic cells present antigens via Major Histocompatibility Complex (MHC) I molecules through cross-presentation.
  • This process is vital for antiviral immunity, anti-tumor responses, vaccination efficacy, and immune tolerance induction.

Purpose of the Study:

  • To provide an overview of current concepts in antigen cross-presentation.
  • To describe major cross-presentation pathways and highlight recent advances and open questions.

Main Methods:

  • Review of existing literature on dendritic cell cross-presentation mechanisms.
  • Analysis of antigen degradation, translocation, and machinery movement in cross-presentation.

Main Results:

  • Cross-presentation involves antigen degradation, dislocation from endosomes to cytosol, and peptide loading onto MHC I.
  • The movement of the cross-presentation machinery between the endoplasmic reticulum and endosomes is a key aspect.

Conclusions:

  • Understanding dendritic cell cross-presentation mechanisms is complex and involves multiple debated pathways.
  • Further research is needed to clarify controversial data and address remaining questions in the field.