Primary Antibody Dilution
Primary Antibody Dilution - Related Videos
03:18
Antibody-Dependent Enhancement of Zika Virus by Dengue Antibodies in Human Primary Macrophages
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2026
Source: Asad, S., et al. Quantification of Antibody-dependent Enhancement of the Zika Virus in Primary Human Cells. J. Vis. Exp. (2019)This video demonstrates antibody-dependent enhancement of Zika virus infection in human primary macrophages, using dengue antibody–virus complexes to model how cross-reactive antibodies facilitate Fcγ receptor–mediated viral entry and replication for studying infection mechanisms and immune interactions.
05:31
A Multiplex Immunostaining Method Using Primary Antibodies from the Same Host Species
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2025
This video demonstrates an assay to perform multiplex immunostaining using primary antibodies from the same host species. In this method, an adrenal tissue section undergoes a two-step immunostaining process. Initially, the section is stained with antibodies specific for markers in the cortex, followed by stripping the bound antibody and restaining with antibodies specific for markers in the medulla.
02:59
Solution Concentration and Dilution
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2020
The relative amount of a given solution component is known as its concentration. Often, though not always, a solution contains one component with a concentration that is significantly greater than that of all other components. This component is called the solvent and may be viewed as the medium in which the other components are dispersed or dissolved. Solutions in which water is the solvent are, of course, very common on our planet. A solution in which water is the solvent is called an aqueous...
01:24
Dilution: Concept
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2026
Dilution in finance refers to the reduction in the ownership percentage of existing shareholders when a company issues additional shares. While dilution is often seen as a negative factor due to its impact on earnings per share (EPS) and voting power, it is sometimes necessary for a company's growth and sustainability.One primary reason for dilution is capital raising. Companies issue new shares to generate funds for expansion, research, acquisitions, or debt repayment. This allows businesses...
01:17
Types of Dilution: Value
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2026
Value dilution occurs when a company's per-share value decreases due to the issuance of additional shares without a corresponding increase in the company’s profits, assets, or market value. This often affects existing shareholders by reducing their share of the company’s earnings and ownership.The leading causes of value dilution include raising capital through new stock issuance, granting stock options to employees, and converting convertible securities into shares. While these activities may...
FAQs
The optimal dilution reflects antibody affinity, antigen abundance, sample type, and detection method. A high-affinity antibody or abundant antigen may require a different concentration from a lower-affinity antibody or scarce target. Sample composition can also affect nonspecific interactions. Considering these variables helps produce a measurable antigen-specific signal without excessive background across different experimental formats.
A calculated dilution prepares the antibody by determining the required relationship between concentrated stock and compatible diluent. A serial dilution creates a sequence of progressively lower concentrations through successive dilution steps. Both approaches can support concentration testing, but using a dilution range is especially useful when the appropriate working concentration is not already established for the antibody and assay.
Antibody concentration affects the balance between specific antigen detection and unwanted signal. If the concentration is not appropriate, the assay may produce excessive background or an insufficient measurable response. Establishing a suitable dilution therefore improves interpretation by helping distinguish antigen-specific binding from nonspecific interactions, which is important when comparing immune or infection-related samples.
Begin with the concentrated antibody stock and select a compatible diluent for the intended assay. Calculate the desired dilution or prepare a planned serial dilution, then combine the stock and diluent to produce the test concentration or range. Applying the resulting preparation consistently across samples supports reproducibility in immunofluorescence, immunohistochemistry, and Western blotting.
Researchers typically test a dilution range rather than assuming one concentration will work for every antibody or sample. They compare the resulting signal and background across the tested conditions, while considering the antigen, sample type, antibody affinity, and detection method. This optimization identifies a concentration that provides measurable specific detection with limited nonspecific background.
In immunology and infection studies, optimized antibody preparations support detection of specific antigens in cells, tissues, or other samples using immunofluorescence, immunohistochemistry, or Western blotting. These measurements can help examine immune responses or detect infectious agents. Consistent dilution is important when comparing samples because concentration differences can affect signal strength and background.