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Lampbrush Chromosomes

Lampbrush Chromosomes

In 1882, Flemming observed lampbrush chromosomes (LBC) in salamander eggs. Later in 1892, Rückert observed LBCs in shark egg cells and coined the term "lampbrush chromosomes" because they looked like brushes used to clean kerosene lamps.
LBCs are made up of two pairs of conjugating homologous chromatids. Each chromatid consists of alternatively positioned regions of condensed-inactive chromatin and loosely placed-active side loops, which can be contracted and extended. The loops...

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Related Experiment Video

Updated: Feb 10, 2026

Fragility Assessment of Bovine Cortical Bone Using Scratch Tests

Fragility Assessment of Bovine Cortical Bone Using Scratch Tests

Published on: November 30, 2017

A not too Fragile Bacteroides.

Siddartha Guru¹, Nadim Jaafar², Rahul Sharma²

¹Infectious Disease, Penn State Milton S. Hershey Medical Center, Hershey, PA, USA.

Journal of Community Hospital Internal Medicine Perspectives

|February 9, 2026

Summary

This summary is machine-generated.

This rare case highlights Bacteroides fragilis vertebral osteomyelitis in a young female. Prompt diagnosis and treatment with metronidazole and ceftriaxone led to symptom resolution.

Area of Science:

Infectious Diseases
Orthopedic Surgery
Microbiology

Background:

Vertebral osteomyelitis is uncommon, especially in young, healthy individuals.

Keywords:

Bacteremia Bacteroides fragilis Infectious diseases Sepsis Vertebral osteomyelitis

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Bacteroides fragilis, an anaerobic bacterium, is a rare cause of vertebral infections.

Prompt diagnosis and management are crucial for favorable outcomes.