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Related Concept Videos

Cancer Cell Migration through Invadopodia01:35

Cancer Cell Migration through Invadopodia

Invadosome is a broad category of cell surface structures with proteolytic activity that  degrades the extracellular matrix (ECM). Invadosomes are present in normal cell types, including macrophages, endothelial cells, and neurons, as well as tumor cells. Although the macrophage podosomes and tumor cell invadopodia are classified as invadosomes, they have different structures, molecular pathways, and functions. Podosomes are short structures that last for a few minutes. However, invadopodia can...
Colonisation of Pathogens01:25

Colonisation of Pathogens

Pathogen colonization of host tissues is a critical step in the development of infectious diseases. Various pathogenic microorganisms, including bacteria, fungi, viruses, and protozoa, have evolved complex strategies to attach to, invade, and persist within host environments. These mechanisms enable pathogens to establish infections, evade immune responses, and resist antimicrobial treatments.Attachment to Host CellsIn bacteria, colonization typically begins with adherence to host epithelial...
Ecological Niches02:02

Ecological Niches

All organisms have a position within an ecosystem. The complete set of living and nonliving factors—including food resources, climate, and terrain—that define the position of a given organism are collectively referred to as the organism’s ecological niche.Multiple species cannot occupy the exact same niche within their habitat. If the niches of two or more species overlap to a large extent, the competitive exclusion principle dictates that one species will outcompete the other, forcing it to...
Reservoir of Infection01:30

Reservoir of Infection

Infectious diseases arise from intricate interactions between pathogens and their reservoirs. A reservoir of infection refers to the natural habitat where a pathogen lives, grows, and multiplies, serving as a continual source of infection. Reservoirs are broadly classified as either living or nonliving, and each plays a unique role in disease transmission, significantly influencing public health interventions and control strategies.Humans act as reservoirs for a wide array of pathogens,...
Short-distance Transport of Resources02:12

Short-distance Transport of Resources

Short-distance transport refers to transport that occurs over a distance of just 2-3 cells, crossing the plasma membrane in the process. Small uncharged molecules, such as oxygen, carbon dioxide, and water, can diffuse across the plasma membrane on their own. In contrast, ions and larger molecules require the assistance of transport proteins due to their charge or size. Transport across membranes also occurs within individual cells, playing a variety of essential roles for the plant as a whole.
Infection01:20

Infection

When a pathogen enters the body and reproduces, it can cause an infection, damage body cells, and cause illness symptoms that eventually lead to disease. Therefore, its prevention requires breaking the chain of infection.
The chain begins with pathogens: bacteria, viruses, fungi, prions, or parasites such as protozoa helminths. These can be present on the skin as transient or resident flora, or they can be acquired from the environment. Identifying and treating the type of infection and...

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[Long-period endogenous oscillations in fish population size: mathematical modeling].

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Related Experiment Video

Updated: Jun 6, 2026

A Modified In vitro Invasion Assay to Determine the Potential Role of Hormones, Cytokines and/or Growth Factors in Mediating Cancer Cell Invasion
06:36

A Modified In vitro Invasion Assay to Determine the Potential Role of Hormones, Cytokines and/or Growth Factors in Mediating Cancer Cell Invasion

Published on: April 24, 2015

[Resource availability and its role in development of invasion processes].

E A Kriksunov, A E Bobyrev, V A Burmenskiĭ

    Zhurnal Obshchei Biologii
    |November 11, 2010
    PubMed
    Summary
    This summary is machine-generated.

    Successful biological invasions, like zebra mussels and smelt, depend on unused resources in water bodies. Invasive species thrive when they exploit

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    Quantitative Measurement of Invadopodia-mediated Extracellular Matrix Proteolysis in Single and Multicellular Contexts
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    Quantitative Measurement of Invadopodia-mediated Extracellular Matrix Proteolysis in Single and Multicellular Contexts

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    Modeling and Imaging 3-Dimensional Collective Cell Invasion
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    Modeling and Imaging 3-Dimensional Collective Cell Invasion

    Published on: December 7, 2011

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    Last Updated: Jun 6, 2026

    A Modified In vitro Invasion Assay to Determine the Potential Role of Hormones, Cytokines and/or Growth Factors in Mediating Cancer Cell Invasion
    06:36

    A Modified In vitro Invasion Assay to Determine the Potential Role of Hormones, Cytokines and/or Growth Factors in Mediating Cancer Cell Invasion

    Published on: April 24, 2015

    Quantitative Measurement of Invadopodia-mediated Extracellular Matrix Proteolysis in Single and Multicellular Contexts
    14:23

    Quantitative Measurement of Invadopodia-mediated Extracellular Matrix Proteolysis in Single and Multicellular Contexts

    Published on: August 27, 2012

    Modeling and Imaging 3-Dimensional Collective Cell Invasion
    07:08

    Modeling and Imaging 3-Dimensional Collective Cell Invasion

    Published on: December 7, 2011

    Area of Science:

    • Ecology
    • Aquatic Ecosystems
    • Invasive Species Biology

    Context:

    • Analysis of biotic communities in diverse water bodies to understand invasion dynamics.
    • Case studies of zebra mussel (Dreissena polymorpha) in Naroch Lakes and smelt (Osmerus eperlanus) in Lake Syamozero.

    Purpose:

    • To determine the conditions that facilitate the development of biological invasions.
    • To identify key factors influencing the success of invasive species in new environments.

    Summary:

    • Utilizes mass-balance and dynamic models to analyze invasion mechanisms.
    • Identifies the availability of unutilized resources ('excess production') as a primary factor for successful invasions that lengthen food chains.
    • Highlights that invasion success is contingent on 'excess' production exceeding a critical threshold and the timing of introduction in heterogeneous environments.

    Impact:

    • Provides insights into the ecological principles governing biological invasions.
    • Informs predictions and management strategies for aquatic invasive species.
    • Contributes to understanding ecosystem resilience and the impact of non-native species on food web dynamics.