Dual Syringe Method
Dual Syringe Method - Related Videos
02:28
Extraction of Apoplastic Bacteria Using a Syringe-Based Pressure Method
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2025
Source: Rufián, J. S., et al, Single-Cell Analysis of the Expression of Pseudomonas syringae Genes within the Plant Tissue. J. Vis. Exp. (2022)This video demonstrates a syringe-based pressure method for extracting apoplastic bacteria, which proliferate and form microcolonies within the apoplast, the intercellular space between plant cells. The method yields debris-free bacterial samples suitable for downstream single-cell analysis.
07:33
In vivo Dual Substrate Bioluminescent Imaging
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Cited by 20 •
2011
Herein we describe the methods to construct, visualize, and quantify the bioluminescent reactions of both firefly and renilla luciferase enzymes expressed in metastatic breast cancer cells during their growth and metastasis in vivo.
09:58
Syringe-injectable Mesh Electronics for Stable Chronic Rodent Electrophysiology
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Cited by 31 •
2018
Mesh electronics probes seamlessly integrate and provide stable, long-term, single-neuron level recording within the brain. This protocol uses mesh electronics for in vivo experiments, involving the fabrication of mesh electronics, loading into needles, stereotaxic injection, input/output interfacing, recording experiments, and histology of tissue containing mesh probes.
03:16
Dual Fluorescence Imaging to Identify Differentiated Oligodendrocytes
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2025
Source: Schott, J. T., et al. Preparation of Rat Oligodendrocyte Progenitor Cultures and Quantification of Oligodendrogenesis Using Dual-infrared Fluorescence Scanning. J. Vis. Exp. (2016). This video demonstrates the use of dual fluorescence imaging to evaluate the differentiation of oligodendrocytes from precursor cells (OPCs) isolated from a rat pup brain. The process includes fixing the cells, labeling specific markers with primary and fluorophore-conjugated secondary antibodies, and...
02:40
Detecting SMAD Pathway Activation Using Dual Adenovirus Transduction
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2026
Source: Chen, H., et al. Live Cell Imaging of the TGF-β/Smad3 Signaling Pathway In Vitro and In Vivo Using an Adenovirus Reporter System. J. Vis. Exp. (2018).This video demonstrates a method to study SMAD pathway activation in breast cancer cells using dual adenoviral infection. One virus delivers a constitutively expressed GFP gene, while the other carries an RFP reporter under a SMAD-sensitive promoter. Upon TGF-beta stimulation, SMAD proteins are activated, forming a complex that induces RFP...
FAQs
Separation prevents the materials from interacting prematurely, which can improve handling and help preserve their stability before administration. This is especially useful when one formulation can crosslink or promote gelation in the other. Combining the components only during delivery supports preparation of materials that are ready to transform at the intended stage.
Synchronized plungers move the two formulations toward the connector or mixing pathway together, allowing controlled blending during delivery. Coordinated motion supports reproducible preparation and administration because the components meet under a defined delivery process rather than being mixed manually in advance. The resulting material can then form a composite construct, hydrogel, or cell-laden biomaterial.
After the formulations meet, they may undergo gelation or crosslinking, converting the combined liquid materials into a more structured biomaterial. This transition is important for injectable hydrogels and related constructs because the material can be delivered in a fluid state and then develop the intended composite form. The overview does not specify a universal reaction time or degree of conversion.
The two-syringe arrangement maintains separate formulations until the point of delivery, whereas premixing would combine them earlier. That distinction can reduce premature interaction and support better handling of reactive materials. It also links mixing more closely to administration, which is relevant when the combined formulation is intended to gel, crosslink, or carry cells as part of a tissue-engineering construct.
A basic setup uses two syringes, each loaded with a distinct liquid formulation, plus a connector or mixing pathway that brings the streams together. The materials may include a polymer solution, crosslinker, or cell suspension. Synchronized plunger movement then delivers and blends the contents, supporting reproducible preparation and administration of the target construct.
Bioengineers may choose the method when separate components must remain stable or manageable until administration, then combine to produce a composite material. Its stated applications include injectable hydrogels, cell-laden biomaterials, tissue engineering, drug delivery, and regenerative medicine research. The approach is therefore relevant when controlled mixing and delivery are important to the experimental design.