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Related Concept Videos

Pore Size Distribution01:23

Pore Size Distribution

In concrete, the pore size distribution significantly influences the material's properties. Capillary pores, markedly larger than gel pores, form a vast network within partially hydrated cement paste, reducing the concrete's strength and increasing its permeability. This heightened permeability leads to a greater risk of damage from environmental factors like freeze-thaw cycles and chemical attacks, with the extent of vulnerability also being tied to the water-to-cement ratio.
Adequate...
Microbes in Beverage Production01:25

Microbes in Beverage Production

Alcoholic beverages such as wine, beer, and spirits are the products of microbial fermentation processes that transform simple sugars into ethanol and a wide array of complex flavor compounds. These transformations rely on the metabolic activities of specific yeasts and bacteria, which are selected and controlled to yield the desired beverage characteristics.Wine Fermentation and MaturationWine production begins with the crushing of grapes to release juice and pulp, forming a must that is...
Pinocytosis00:43

Pinocytosis

Cells use energy-requiring bulk transport mechanisms to transfer large particles, or large amounts of small particles, into or out of the cell. The cells envelop the particles in spherical membranes called vesicles or vacuoles. Vesicles that transport material into the cell are built from the cell membrane. These vesicles encapsulate external molecules and transport them into the cell in a process called endocytosis.
Pinocytosis00:38

Pinocytosis

Cells use energy-requiring bulk transport mechanisms to transfer large particles or large numbers of small particles into or out of the cell. The cells envelop the particles in spherical membranes called vesicles or vacuoles. Vesicles that transport material into the cell are built from the cell membrane. These vesicles encapsulate external molecules and transport them into the cell in a process called endocytosis.
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Pore Transport and Ion-Pair Transport01:17

Pore Transport and Ion-Pair Transport

Pore transport and ion-pair formation are critical mechanisms for the absorption and distribution of drugs in the body.
Pore transport, also known as convective transport, is a process where small molecules like urea, water, and sugars rapidly cross cell membranes as though there were channels or pores in the membrane. Although direct microscopic evidence is limited  but the concept of pores or channels is widely accepted based on physiological evidence. Despite the lack of direct microscopic...
Regulation of Transpiration by Stomata02:04

Regulation of Transpiration by Stomata

During photosynthesis, plants acquire the necessary carbon dioxide and release the produced oxygen back into the atmosphere. Openings in the epidermis of plant leaves is the site of this exchange of gasses. A single opening is called a stoma—derived from the Greek word for “mouth.” Stomata open and close in response to a variety of environmental cues.

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Related Experiment Video

Updated: Jul 13, 2026

Profiling the Bacterial Community of Fermenting Traminette Grapes during Wine Production using Metagenomic Amplicon Sequencing
07:34

Profiling the Bacterial Community of Fermenting Traminette Grapes during Wine Production using Metagenomic Amplicon Sequencing

Published on: December 1, 2023

Dilated pore of Winer.

R R Mittal1, P S Sethi, Anju Jha

  • 1Department of Dermato-Venereology, Govt Medical College & Rajindra Hospital, Patiala-147 001, Punjab, India.

Indian Journal of Dermatology, Venereology and Leprology
|July 28, 2007
PubMed
Summary

Dilated pore of Winer, a benign skin condition, presents as a solitary, enlarged hair follicle. This report details two cases, highlighting clinical and histopathological findings for accurate diagnosis.

Area of Science:

  • Dermatology
  • Histopathology
  • Dermatopathology

Background:

  • Dilated pore of Winer is a rare, benign follicular hamartoma.
  • It typically presents as a solitary, dark papule with a central pore.
  • Accurate diagnosis relies on characteristic clinical and histopathological features.

Purpose of the Study:

  • To report two distinct cases of Dilated pore of Winer.
  • To illustrate the clinical presentation and histopathological findings.
  • To emphasize diagnostic criteria for this follicular anomaly.

Main Methods:

  • Clinical observation of two patients presenting with characteristic skin lesions.
  • Detailed dermatoscopic examination of the papules.
  • Histopathological analysis of excised lesions to confirm diagnosis.

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Monitoring Protein Adsorption with Solid-state Nanopores

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Last Updated: Jul 13, 2026

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Main Results:

  • Case 1: A single, well-defined black papule on the nose with a central pore and discharge.
  • Case 2: A larger black papule on the forearm with similar features, accompanied by smaller lesions.
  • Histopathology in both cases revealed a greatly dilated infundibulum with epidermal acanthosis and atrophic hair structures.

Conclusions:

  • Dilated pore of Winer can present with varying lesion counts and sizes.
  • Histopathological examination is crucial for confirming the diagnosis.
  • Understanding these features aids in differentiating from other follicular or pigmented lesions.