Related Experiment Video
Updated: Sep 12, 2026

Collection and Extraction of Occupational Air Samples for Analysis of Fungal DNA
Published on: May 2, 2018
Experimental pneumoconiosis due to dusts of ore mines, I
Abstract:
Male CFY rats were injected into their trachea with a suspension of dust of ore mine dead rock of high quartz content and mixed composition (particle size: 0-60 micrometers). Three and six months after treatment, foreign body granulation and after twelve months a non-fibrotic diffuse lung disease was seen in the animals. After twelve months of exposure, non-specific, mature sinus histiocytosis and small focal epitheloid cell reaction were found to develop in the cervical, lung-hilar and retroperitoneal lymph nodes. The histopathological changes were compared with those seen in experimental silicosis induced by DQ12 quartz. It is concluded that the hazardous effect of industrial dusts is not identical with their fibrogenic effect.
Related Concept Videos
Transmission-based Precautions II: Airborne and Protective Environment
Airborne precautions:
Use airborne precautions when treating patients known or suspected to have diseases that spread through the air—for example, tuberculosis or measles. These organisms are present in smaller droplets expelled by an infected person and...
Assessment of Respiration
Subjective Assessment: Nurses interview the patient to gather information directly during the subjective assessment. It includes questions about the individual's medical history, medications, and symptoms, focusing on past respiratory conditions like asthma or COPD,...
Pulmonary Tuberculosis I
Causative Organism
The primary infectious agent causing tuberculosis is Mycobacterium tuberculosis, a slow-growing, acid-fast, aerobic rod that exhibits sensitivity to heat and ultraviolet light. Instances of Mycobacterium bovis and Mycobacterium avium contributing to the development of TB infection are rare.
Mode of...
Pneumothorax-II
Clinical Manifestations:
Pulmonary Function Tests
Pulmonary Function Tests are crucial diagnostic tools for assessing respiratory function, particularly in patients with chronic respiratory disorders. They comprehensively evaluate lung volumes, ventilatory function, breathing mechanics, diffusion, and gas exchange. These tests help diagnose pulmonary diseases and play a significant role in monitoring disease progression, evaluating disability, and assessing response to therapy.
PFTs involve using a spirometer, a...
Pneumonia I: Introduction

