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Updated: Jan 19, 2026
Retro Orbital, Tail and Intra-cardiac Blood Collection in Rodents
Published on: April 30, 2023
Younger Physicians and Longer Withdrawal Times Are Associated With Detection of Advanced Neoplasia in a Large
Aasma Shaukat1, Amy A Gravely2, Adam S Kim3
1Division of Gastroenterology, Minneapolis Veterans Affairs Medical Center, Minneapolis, Minnesota; Department of Medicine, School of Public Health, University of Minnesota, Minneapolis, Minnesota.
Abstract:
Studies assessing colonoscopic practice have demonstrated variation in adenoma detection rate,1 detection rates of advanced adenomas,2,3 and detection rates of sessile serrated lesions (SSLs).4,5 Our aims were to study the patient-, provider-, and procedure-level variables associated with detection rates of adenoma, SSLs, and advanced neoplasia in screening colonoscopies performed in large community practice.
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Blood Withdrawal I
Blood collection is a common requirement for research studies that involve mice and rats. The method of blood withdrawal in mice and rats is dependent upon the volume of blood needed, the frequency of the sampling, the health status of the animal to be bled, and the skill level of the technician.1 All methods discussed-retro-orbital sinus bleeds, initial tail snip bleeds, and intracardiac...
Blood Withdrawal II
The collection of blood from mice and rats for analysis can be done through a variety of methods. Each method of collection has variations in the type of restraint required, the invasiveness of the procedure, and the necessity of a general anesthetic.1Historically, the use of the retro-orbital sinus cavity has been used, but not without debate. The controversy related to the potential tissue...
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