Horseshoe Crab Blood Collection
Horseshoe Crab Blood Collection - Related Videos
12:48
Blood Collection from the American Horseshoe Crab, Limulus Polyphemus
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Cited by 27 •
2008
The American horseshoe crab, Limulus polyphemus, is arguably the most convenient source for large quantities of blood of any invertebrate. The blood is simple in composition, with only one cell-type in the general circulation, the granular amebocyte, and only three abundant proteins in the plasma, hemocyanin, the C-reactive proteins, and α2-macroglobulin. Blood is collected from the heart and the blood cells and plasma are separated by centrifugation.
14:28
Using the Horseshoe Crab, Limulus Polyphemus, in Vision Research
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Cited by 14 •
2009
In this video we perform electroretinogram recording, optic nerve recording, and intraretinal recording with the American horseshoe crab, Limulus Polyphemus. These electrophysiological paradigms can be used for investigating the neural basis of vision in a research or teaching lab.
03:57
Transmesenteric Laparoscopic Pyeloplasty in Trendelenburg Position for Horseshoe Kidney with Hydronephrosis
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2025
In this report, we present a case of intraperitoneal laparoscopic surgery in the Trendelenburg position (ILSTP) for trans mesenteric pyeloplasty in a horseshoe kidney with hydronephrosis. We provide a detailed protocol and practical tips for surgeons interested in adopting this approach.
01:30
Blood Collection in Rabbits
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2026
All animal procedures described here must be conducted in accordance with institutional animal ethics guidelines and approved by IACUC. All procedures must follow the principles of the 3Rs—Replacement, Reduction, and Refinement—and must be performed by trained personnel. Blood sampling is commonly performed in laboratory rabbits for research and clinical applications. The collection site is selected based on the required sample volume, sampling frequency, and study objectives. As a general...
05:12
Repeated Blood Collection from Tail Vein of Non-Anesthetized Rats with a Vacuum Blood Collection System
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Cited by 25 •
2017
Here, we describe a simple tail vein blood sampling method in non-anesthetized rats using a vacuum extraction tube system. This method reduces the risk of direct exposure to blood and simplifies taking multiple samples from a single venipuncture.
FAQs
An open circulatory system changes where and how hemolymph is accessed: collection targets the cardiac region rather than relying on a closed network of veins and arteries. This anatomical feature makes the sampling site central to the procedure and means trained personnel must work under controlled conditions. The approach links horseshoe crab anatomy directly to consistent biological sampling.
The key analytical response comes from amebocytes, immune cells in the hemolymph. After these cells are separated and processed into Limulus amebocyte lysate, the preparation produces a clotting response when bacterial endotoxin is present. That reaction converts a cellular defense mechanism into a measurable quality-control signal, allowing the sample to support testing beyond basic biological observation.
It provides a window into how amebocytes participate in innate immunity. Studying these cells and their clotting response can therefore connect a sampling procedure with broader questions about invertebrate biology. The same response also explains why hemolymph-derived preparations are useful in both research and biomedical testing, linking immune function with practical laboratory applications.
Trained personnel obtain hemolymph from the cardiac region under controlled conditions, then amebocytes are separated and processed into Limulus amebocyte lysate when endotoxin testing is intended. Careful handling and limited blood loss are important parts of the workflow because the sampling procedure affects animal welfare as well as downstream use.
Its downstream lysate can detect bacterial endotoxin, making it relevant to quality control for injectable drugs, vaccines, and medical devices. The value lies in translating a specific hemolymph clotting response into a test used during product quality control. This application extends the importance of horseshoe crab biology from research into biomedical production and testing.
Alternatives such as recombinant assays provide a way to pursue endotoxin testing without depending exclusively on hemolymph collected from wild horseshoe crabs. Their development is therefore relevant to reducing impacts on wild populations, while traditional collection still supports research, biomedical testing, and innate-immunity studies. This creates both a biological and conservation context for evaluating methods.