A new particulate antigen present in serum
Related Experiment Video
Updated: Aug 7, 2026

05:15
Detection of Neutralization-sensitive Epitopes in Antigens Displayed on Virus-Like Particle (VLP)-Based Vaccines Using a Capture Assay
Published on: February 10, 2022
Abstract:
A new antigen has been encountered in the serum of 10 blood donors. It is distinct from Australia antigen, consists of spherical particles 21-23 nm in diameter and the corresponding antibody is widely distributed in the population.
Related Concept Videos
Vaccinations
Overview
Antigens Involved in Adaptive Immunity
An antigen is any substance the immune system identifies as foreign and potentially harmful to the body, prompting an immune response. Antigens have two functional properties: immunogenicity and reactivity. Immunogenicity is the ability of an antigen to stimulate a specific immune response. At the same time, reactivity describes the antigen's ability to react with the cells and antibodies produced in response to it.
Complete Antigens
Complete antigens possess both immunogenicity and reactivity.
Complete Antigens
Complete antigens possess both immunogenicity and reactivity.

