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 ...

THE direct observation of the site of Gram stain in cells of micro-organisms could not be attempted before the ultra-thin section technique became available. However, to obtain a suitable section, ...

Differentiating bacterial strains within a single sample can be a daunting challenge. Microscopic studies of the sample can be used for simple identification and differentiation tasks. Microbiologists ...