Host Immune Response
Host Immune Response - Related Videos
02:46
Intranasal Murine Herpesvirus Infection in Mice to Assess Host Immune Responses
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2026
Source: Zhang, J., et al. P. Dissecting Innate Immune Signaling in Viral Evasion of Cytokine Production. J. Vis. Exp. (2014)This video demonstrates intranasal delivery of murine herpesvirus in mice to induce a lung-specific immune response. Lung tissue is subsequently processed to obtain cytokine-containing supernatants for downstream assessment of host immune responses.
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Humoral Immune Responses
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2019
Overview The humoral immune response, also known as the antibody-mediated immune response, targets pathogens circulating in “humors,” or extracellular fluids, such as blood and lymph. Antibodies target invading pathogens for destruction via multiple defense mechanisms, including neutralization, opsonization, and activation of the complement system. Patients that are impaired in the production of antibodies suffer from severe and frequent infections by common pathogens and unusual pathogens. B...
12:27
The Utilization of Oropharyngeal Intratracheal PAMP Administration and Bronchoalveolar Lavage to Evaluate the Host Immune Response in Mice
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Cited by 15 •
2014
The host immune response to pathogen infection is a tightly regulated process. Utilizing a lipopolysaccharide lung exposure model in mice, it is possible to conduct high resolution evaluations of the complex mechanisms associated with disease pathogenesis.
09:07
Using Zebrafish Models of Human Influenza A Virus Infections to Screen Antiviral Drugs and Characterize Host Immune Cell Responses
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Cited by 16 •
2017
Systemic and localized zebrafish infection models for human influenza A virus are demonstrated. Using a systemic infection model, zebrafish can be used to screen antiviral drugs. Using a localized infection model, zebrafish can be used to characterize host immune cell responses.
09:43
Transplantation of Zebrafish Pediatric Brain Tumors into Immune-competent Hosts for Long-term Study of Tumor Cell Behavior and Drug Response
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Cited by 22 •
2017
The transplantation of cancer cells is an important tool for the identification of cancer mechanisms and therapeutic responses. Current techniques depend on immune-incompetent animals. Here, we describe a method to transplant zebrafish tumor cells into immune-competent embryos for the long-term analysis of tumor cell behavior and in vivo drug responses.
FAQs
Innate defenses provide the initial reaction by detecting conserved microbial features or tissue damage, promoting inflammation, antimicrobial activity, and immune-cell recruitment. Adaptive defenses follow with antigen-specific T-cell and B-cell responses. This division allows the organism to respond rapidly while also developing targeted protection and immunological memory against the triggering threat.
These signals alert the immune system that infection or injury may be present. Their detection initiates inflammation, supports antimicrobial activity, and recruits immune cells to the affected area. In immunology and infection research, this mechanism helps explain how local recognition becomes a coordinated defense rather than an isolated cellular response.
Pathogens can evade immune defenses, changing how effectively the response controls infection. The interaction between microbial evasion and immune activity contributes to different infection outcomes, including variation in protection and tissue damage. Studying these interactions helps researchers connect pathogen behavior with the distinct results observed during infection.
Adaptive immunity can generate immunological memory in addition to antigen-specific T-cell, B-cell, and antibody responses. Memory preserves information about a prior antigenic challenge, making it a central feature of longer-term protection. This principle provides the scientific basis for understanding how vaccines can strengthen host defenses against infection.
Such studies reveal how innate sensors, inflammation, antimicrobial activity, immune-cell recruitment, and adaptive responses interact during infection. They also clarify why pathogens evade defense and why infections can produce different outcomes. These findings support the evaluation of vaccines, immunotherapies, and anti-inflammatory treatments designed to improve protection or reduce harmful tissue damage.
The appropriate goal depends on the balance between protection and tissue injury. Vaccines and immunotherapies are relevant when stronger or more effective defense is needed, whereas anti-inflammatory treatments are considered when immune activity contributes to tissue damage. Understanding this balance helps researchers evaluate interventions without treating antimicrobial protection and inflammation as identical outcomes.