Larvae Injection
Larvae Injection - Related Videos
02:28
Inducing Neuroinflammation in Zebrafish Larvae with a Lipopolysaccharide Injection
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2025
The video demonstrates the microinjection of lipopolysaccharides (LPS) into the brains of zebrafish larvae to induce neuroinflammation. The larvae are positioned on an agarose-lined dish, the needle is inserted into the brain ventricles, and the LPS is injected. The injected LPS triggers an immune response that leads to neuroinflammation.
09:04
Rearing and Injection of Manduca sexta Larvae to Assess Bacterial Virulence
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Cited by 10 •
2012
The method described here utilizes direct injection of entomopathogenic bacteria into the hemocoel of Manduca sexta insect larvae. M. sexta is a commercially available and well-studied insect. Thus, this method represents a simple approach to analyzing host-bacterial interactions from the perspective of one or both partners.
03:16
Drosophila melanogaster Larva Injection Protocol
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Cited by 1 •
2021
Drosophila melanogaster adult flies have been extensively utilized as model organisms to investigate the molecular mechanisms underlying host antimicrobial innate immune responses and microbial infection strategies. To promote the D. melanogaster larva stage as an additional or alternative model system, a larval injection technique is described.
10:53
Microgavage of Zebrafish Larvae
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Cited by 91 •
2013
We present a novel method for microgavage of larval zebrafish utilizing standard embryo microinjection and stereomicroscopy equipment. We demonstrate that microgavage is a safe and efficient technique useful for delivering controlled amounts of diverse materials specifically into the larval zebrafish intestinal lumen.
08:22
Reverse Genetic Morpholino Approach Using Cardiac Ventricular Injection to Transfect Multiple Difficult-to-target Tissues in the Zebrafish Larva
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Cited by 9 •
2014
An adaptable reverse genetic method for zebrafish to assess gene function during later stages of development and physiological homeostasis such as tissue regeneration using intraventricular injections of gene-specific morpholinos.
FAQs
These variables determine where the introduced material acts, how much exposure the larva receives, and which developmental process is examined. A targeted compartment can link the treatment to a specific biological response, while controlled timing helps associate early exposure with later cellular, molecular, or organismal outcomes. Consistent dosing and timing also improve comparisons between experimental groups.
The injection must introduce the intended material without creating biological changes caused primarily by the procedure itself. Limiting tissue damage helps preserve normal larval responses, while reducing contamination prevents unintended substances or organisms from influencing the results. Careful penetration with a fine needle or microinjection tool therefore supports more reliable interpretation of developmental, physiological, or host–microbe responses.
The approach can deliver cells, chemicals, pathogens, nucleic acids, and other experimental materials. This range allows researchers to examine distinct biological questions, including responses to compounds, effects of introduced genetic material, interactions with microorganisms, or consequences of adding cells during development. The material selected determines the experimental manipulation and the type of downstream response that can be studied.
Injection timing determines the developmental context in which the larva encounters the introduced material. Early-life exposure can be connected with later changes at cellular, molecular, or organismal levels, but those outcomes depend on when the manipulation occurs. Selecting and recording the timing is therefore essential for interpreting how developmental state relates to the observed biological response.
A typical workflow begins by selecting the material, determining a measured dose, and identifying the larval compartment to be targeted. Researchers then use a fine needle or microinjection tool to penetrate the larva while limiting tissue damage and contamination. Subsequent observations connect the intervention with developmental, physiological, cellular, molecular, or organismal outcomes.
Larvae injection is useful when researchers need to examine how a defined material affects a developing organism. Applications described for the technique include studies of development, physiology, host–microbe interactions, and responses to experimental compounds. Because researchers can control the material, dose, and timing, the method helps relate an early manipulation to changes measured later across biological levels.