Related Experiment Video
Updated: Aug 14, 2026

Advanced Imaging of Lung Homing Human Lymphocytes in an Experimental In Vivo Model of Allergic Inflammation Based on Light-sheet Microscopy
Published on: April 16, 2019
[The profile of T-lymphocyte subsets' populations in 4 different kinds of pulmonary disorders]
1PUMC Hospital, Beijing.
By using the bronchoalveolar lavage (BAL) technique, the authors observed the distribution of T-lymphocyte subsets both in peripheral blood and BAL fluid from 4 different kinds of pulmonary disorders (44 cases). It was shown that the percentage of lymphocytes in BAL fluid was increased, the CD+3 and CD+4 cells were elevated and 4/8 ratio was also significantly elevated in the sarcoid patients (11 cases); the CD+4 cells decreased but the CD+8 cells increased and the 4/8 ratio decreased significantly in the patients of idiopathic pulmonary fibrosis (7 cases) and the patients with thoracic malignant tumors (20 cases). This special profile of T-lymphocytes indicates that the cell-mediated immune function may play an important role in the pathogenesis of the above illnesses.
By using the bronchoalveolar lavage (BAL) technique, the authors observed the distribution of T-lymphocyte subsets both in peripheral blood and BAL fluid from 4 different kinds of pulmonary disorders (44 cases). It was shown that the percentage of lymphocytes in BAL fluid was increased, the CD+3 and CD+4 cells were elevated and 4/8 ratio was also significantly elevated in the sarcoid patients (11 cases); the CD+4 cells decreased but the CD+8 cells increased and the 4/8 ratio decreased significantly in the patients of idiopathic pulmonary fibrosis (7 cases) and the patients with thoracic malignant tumors (20 cases). This special profile of T-lymphocytes indicates that the cell-mediated immune function may play an important role in the pathogenesis of the above illnesses.
More Related Videos
07:21Processing of Bronchoalveolar Lavage Fluid and Matched Blood for Alveolar Macrophage and CD4+ T-cell Immunophenotyping and HIV Reservoir Assessment
Published on: June 23, 2019
09:00Characterization of Immune Cells and Proinflammatory Mediators in the Pulmonary Environment
Published on: June 24, 2020
Related Concept Videos
Other Pulmonary Disorders
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...
Pulmonary Tuberculosis III
The first classification is based on the development of the disease, and it includes the following categories:
Pulmonary Tuberculosis IV
Several diagnostic approaches are used to detect TB. The conventional method is the Tuberculin Skin Test (TST), also known as the Mantoux test. However, this method has...
Chronic Obstructive Pulmonary Disease-IV: Assessement and Diagnostic Studies
Medical History
Chronic Obstructive Pulmonary Disease IV: Clinical Manifestations