Subcutaneous Injection
Subcutaneous Injection - Related Videos
03:52
Subcutaneous Injection of Bacterial Antigen to Induce Systemic Inflammation in a Murine Model
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2025
This video demonstrates the induction of systemic inflammation in an anesthetized mouse. The injection of mycobacterial antigen-adjuvant depots triggers cytokine release and localized inflammation. Lymphatic vessels open, enabling immune cell entry into lymph nodes and activation of T cells, which release pro-inflammatory cytokines, leading to widespread inflammation.
05:50
Subcutaneous Neurotrophin 4 Infusion Using Osmotic Pumps or Direct Muscular Injection Enhances Aging Rat Laryngeal Muscles
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Cited by 7 •
2017
Here, we present a protocol to describe the use of neurotrophin 4 (NTF4) systemically and directly to remodel rat aging laryngeal muscles.
10:35
Generation of Subcutaneous and Intrahepatic Human Hepatocellular Carcinoma Xenografts in Immunodeficient Mice
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Cited by 15 •
2013
Human tumor xenografts in immunodeficient mice are valuable tools to study cancer biology. Specific protocols to generate subcutaneous and intrahepatic xenografts from human hepatocellular carcinoma cells or tumor fragments are described. Liver regeneration induced by partial hepatectomy in recipient mice is presented as a strategy to facilitate intrahepatic engraftment.
12:18
Subcutaneous Infection of Methicillin Resistant Staphylococcus Aureus (MRSA)
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Cited by 23 •
2011
Murine skin and soft tissue infection model is utilized for assessing the virulence function of methicillin resistant Staphylococcus aureus (MRSA) and the host immunological responses. Here, we presented a subcutaneous infection model for skin and soft tissue infection.
09:01
A Technique for Subcutaneous Abdominal Adipose Tissue Biopsy via a Non-diathermy Method
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Cited by 7 •
2017
We standardized an abdominal adipose tissue biopsy using a non-diathermy method performed under local anesthesia. Three cases of excessive post-operation bleeding out of 115 operations (2.61%) occurred.We conclude that an abdominal adipose tissue surgical biopsy using a non-diathermy method can be safely applied to healthy men.
FAQs
Placement in fatty tissue creates a local depot from which the substance can move toward nearby capillaries rather than entering a blood vessel directly. This tissue location helps explain why uptake is generally slower and more sustained. The resulting absorption pattern is important when studying how delivery location influences pharmacokinetics, or the movement of a substance through the body.
The defining control point is the final location of the needle tip and delivered material. A subcutaneous injection passes through the dermis and deposits the substance in fatty tissue, not muscle or a blood vessel. Maintaining that distinction affects the expected absorption route and helps researchers assess whether observed biological effects reflect the intended delivery method.
Site selection, needle placement, insertion angle, and delivered volume are central variables. The needle must pass through the dermis at a controlled angle and place the material within subcutaneous tissue. Appropriate site choice and volume control can reduce tissue injury, while accurate placement supports more consistent access to nearby capillaries and more reliable uptake.
A basic workflow begins with selecting an appropriate site, choosing a suitable needle, and controlling the insertion angle as the needle passes through the dermis. The material is then placed in subcutaneous tissue while the volume is kept within an appropriate limit. These decisions are intended to support correct positioning, reduce tissue injury, and promote dependable absorption.
This delivery approach is used for substances such as insulin and other biologic therapies. Its value comes from combining access to subcutaneous tissue with a generally slower, sustained absorption pattern. In biology and medicine, that makes the technique relevant to therapeutic delivery as well as investigations of how biological substances move from tissue into circulation.
Studies can examine tissue barriers, pharmacokinetics, immune responses, and delivery safety. Investigators may relate the site and quality of needle placement to how a substance is absorbed, how tissue responds, and whether delivery causes injury. The method therefore provides both a practical delivery route and an experimental context for evaluating biological uptake and safety.