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Related Concept Videos

Lampbrush Chromosomes01:51

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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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Polytene chromosomes are giant interphase chromosomes with several DNA strands placed side by side. They were discovered in the year 1881 by Balbiani in salivary glands, intestine, muscles, malpighian tubules, and hypoderm of larvae Chironomus plumosus. Hence, these are also called "Salivary gland chromosomes." These are found in insects of the order Diptera and Collembola; in certain organs of mammals; and synergids, antipodes of flowering plants. Polytene chromosomes are also...
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Updated: Feb 1, 2026

Electrophysiological Recordings from the Giant Fiber Pathway of D. melanogaster
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[Cardiomegalia gigante].

Luisa María Charco-Roca1, María Garví-López1, Lorena Moreno-De la Rosa1

  • 1Universidad de Castilla-La Mancha, Hospital General Universitario de Albacete; Centro de Salud de Villanueva de la Jara. Castilla-La Mancha, España.

Gaceta Medica De Mexico
|December 12, 2018
PubMed
Summary

An 80-year-old woman experienced a cardioembolic stroke. Her complex medical history includes hypertension, valve replacement, and heart failure requiring oxygen therapy.

Keywords:
Biatrial enlargementCardiomegaliaCardiomegalyChest radiographDilatación biauricularRadiografía de tórax

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Area of Science:

  • Cardiology
  • Neurology
  • Geriatrics

Background:

  • The patient is an 80-year-old female with a significant past medical history.
  • Conditions include arterial hypertension, rheumatic valvular heart disease, and chronic atrial fibrillation.
  • She has congestive heart failure requiring 17 hours of daily home oxygen therapy.

Observation:

  • The patient presented to the hospital with symptoms indicative of a stroke.
  • The stroke was determined to be of cardioembolic origin.

Findings:

  • The patient's presentation highlights the risks associated with multiple cardiovascular comorbidities.
  • Cardioembolic stroke is a serious complication in elderly patients with complex cardiac histories.

Implications:

  • This case underscores the importance of comprehensive management of cardiovascular risk factors in the elderly.
  • Effective anticoagulation and heart failure management are crucial for preventing cardioembolic events.
  • Further research into stroke prevention strategies for high-risk geriatric populations is warranted.