Ziehl-Neelsen stain


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Ziehl-Neelsen stain

[′zēl ′nēl·sən ‚stān]
(microbiology)
A procedure for acid-fast staining of tubercle bacilli with carbol fuchsin.
References in periodicals archive ?
Only those cases in whom Ziehl-Neelsen stain positive were diagnosed as tuberculous granulomatous lesions (60 cases) and rest as chronic nonspecific granulomatous lesions (14 cases).
Additionally, the lesions in the mediastinal lymph nodes and the pulmonary nodules are grossly compatible with tuberculosis which is an important differential diagnosis that was ruled out through histopathology as well as negative results in the Ziehl-Neelsen stain.
Comparison of fluorescence microscopy with Ziehl-Neelsen stain for demonstration of acid-fast bacilli in smear preparations and tissue sections.
However, in the microbiology laboratory a Ziehl-Neelsen stain with a small sample obtained from a cutaneous biopsy was carried out, but no fast-acid bacilli (FAB) were observed.
Summary: Results of key investigations Investigation Findings Chest X-ray * Bilateral pleural effusion without any infiltration CT of the chest * Bilateral pleural effusion with consolidation of the right lower zone of the lung without any pulmonary nodules or lymphadenopathy Sputum examination * Negative Ziehl-Neelsen stain (x 2) * Negative GeneXpert PCR for Mycobacterium tuberculosis Pleural fluid examination * Straw-coloured * Triglycerides 3.
The presence of acid-fast bacilli was confirmed with a Ziehl-Neelsen stain.
5) The organisms may be acid-fast with the Ziehl-Neelsen stain, however, this too depends on its growth media and the age of the culture.
A fungal infection test and Ziehl-Neelsen stain from the lesions revealed negative results.
Other stains can be applied according to the need of diagnosis, for example, Gram's stain, Ziehl-Neelsen stain, Periodic acid-Schiff stain, Alcian blue stain, and Papanicolaou stain.
Although the culture of pus revealed growth of no organisms and the Ziehl-Neelsen stain for acid fast bacilli was negative, prophylactically the patient was put on broad spectrum antibiotics which provided only temporary relief.
When performing Ziehl-Neelsen stain, the result was negative for Mycobacterium sp.