Search research articles

ABOUT JoVE

Overview Leadership Blog JoVE Help Center

AUTHORS

Publishing Process Editorial Board Scope & Policies Peer Review FAQ Submit

LIBRARIANS

Testimonials Subscriptions Access Resources Library Advisory Board FAQ

RESEARCH

JoVE Journal Methods Collections JoVE Encyclopedia of Experiments Archive

EDUCATION

JoVE Core JoVE Business JoVE Science Education JoVE Lab Manual Faculty Resource Center Faculty Site

Terms & Conditions of Use

Related Concept Videos

Lethal Alleles

Lethal Alleles

Agouti: A Lethal Allele
Lucien Cuénot discovered lethal alleles in 1905 while studying the inheritance of coat color in mice. The agouti gene is responsible for the color of the coat in mice. This gene codes for an agouti-signaling protein, which is responsible for melanin distribution in mammals. The wild-type allele gives rise to gray-brown coat color in mice, while the mutant allele gives rise to yellow coat color. In addition to coat color, the agouti gene is associated with the yellow...

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by

Same author

Uterine artery embolization for the treatment of symptomatic adenomyosis: a systematic review.

CVIR endovascular·2026

Same author

Measuring the Vein, Missing the Circuit: Gonadal Vein Diameter in Pelvic Venous Disorders.

Cardiovascular and interventional radiology·2026

Same author

Acute Non-Traumatic Urinary Tract Emergencies: The Central Role of CT Imaging and the Emerging Role of Photon-Counting CT.

Canadian Association of Radiologists journal = Journal l'Association canadienne des radiologistes·2026

Same author

Cerebral fat embolism syndrome in sickle cell disease: a case highlighting the predominance of susceptibility-weighted imaging findings and literature review.

Radiology case reports·2026

Same author

Lipoid Pneumonia: HRCT and MRI Spectrum, Diagnostic Pitfalls, and Imaging-Based Diagnostic Workflow.

Diagnostics (Basel, Switzerland)·2026

Same author

Beyond the clot: diagnostic yield, biomarker performance, and the landscape of alternative diagnoses in emergency CT pulmonary angiography.

Emergency radiology·2026

Search research articles

Related Experiment Video

Updated: Jun 27, 2025

Cutaneous Leishmaniasis in the Dorsal Skin of Hamsters: a Useful Model for the Screening of Antileishmanial Drugs

Cutaneous Leishmaniasis in the Dorsal Skin of Hamsters: a Useful Model for the Screening of Antileishmanial Drugs

Published on: April 21, 2012

Lemmel's Syndrome: Lesson Based on a Case Report.

Renato Farina¹, Pietro Valerio Foti¹, Adriana Ilardi¹

¹Department of Medical Surgical Sciences and Advanced Technologies "G.F. Ingrassia", University of Catania, Catania, Italy.

Journal of Medical Ultrasound

|April 26, 2024

Summary

Lemmel's syndrome, a rare bile duct disease, involves nonobstructive jaundice caused by periampullary duodenal diverticula. Surgical removal of these diverticula is the recommended treatment to prevent complications.

Keywords:

Biliary ducts Lemmel’s syndrome computed tomography duodenum diverticula resonance magnetic imaging ultrasound

More Related Videos

From a 2DE-Gel Spot to Protein Function: Lesson Learned From HS1 in Chronic Lymphocytic Leukemia

From a 2DE-Gel Spot to Protein Function: Lesson Learned From HS1 in Chronic Lymphocytic Leukemia

Published on: October 19, 2014

Isolating Human Peripheral Blood Mononuclear Cells and CD4+ T cells from Sézary Syndrome Patients for Transcriptomic Profiling

Isolating Human Peripheral Blood Mononuclear Cells and CD4+ T cells from Sézary Syndrome Patients for Transcriptomic Profiling

Published on: October 14, 2021

Related Experiment Videos

Last Updated: Jun 27, 2025

Cutaneous Leishmaniasis in the Dorsal Skin of Hamsters: a Useful Model for the Screening of Antileishmanial Drugs

Cutaneous Leishmaniasis in the Dorsal Skin of Hamsters: a Useful Model for the Screening of Antileishmanial Drugs

Published on: April 21, 2012

From a 2DE-Gel Spot to Protein Function: Lesson Learned From HS1 in Chronic Lymphocytic Leukemia

From a 2DE-Gel Spot to Protein Function: Lesson Learned From HS1 in Chronic Lymphocytic Leukemia

Published on: October 19, 2014

Isolating Human Peripheral Blood Mononuclear Cells and CD4+ T cells from Sézary Syndrome Patients for Transcriptomic Profiling

Isolating Human Peripheral Blood Mononuclear Cells and CD4+ T cells from Sézary Syndrome Patients for Transcriptomic Profiling

Published on: October 14, 2021

Area of Science:

Gastroenterology
Hepatology
Biliary Medicine

Background:

Lemmel's syndrome is a rare condition characterized by bile duct disease.
It stems from periampullary duodenal diverticula located near the Vater papilla.

Observation:

This syndrome typically presents as nonobstructive jaundice.
Duodenal diverticula can cause biliary tract obstruction through extrinsic compression, leading to complications like lithiasis and cholangitis.

Findings:

Diagnosis is challenging, requiring correlation of recurrent biliary symptoms with duodenal diverticula compression.
Imaging studies reveal bile duct dilation without stones or pancreatic duct dilation, compressed by medial duodenal diverticula.

Implications:

Prompt diagnosis and surgical intervention (diverticulectomy) are crucial for managing Lemmel's syndrome.
Delayed diagnosis can lead to severe patient health complications.