A sputum stain for Mycobacteria is a laboratory test performed on a sample of your sputum, or phlegm. It’s also known as an acid-fast bacillus (AFB) stain or a tuberculosis (TB) smear. A doctor ...

What is a sputum Gram’s stain? A sputum Gram’s stain is a laboratory test that allows your doctor to diagnose a bacterial infection in your respiratory tract. They may order it if you have symptoms of ...

A PREREQUISITE for the successful detection of cancer cells in sputum is an adequate specimen, the microscopical criterion for which is the presence of alveolar histiocytes ("dust" cells). Although ...

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