Microscopy of bronchial aspirate showing gram-positive bacilli. A 71-year-old male with a history of chronic obstructive pulmonary disease (COPD) developed fever, anorexia, and shortness of breath. He ...

Gram-positive bacteria have thick cell walls. A Gram stain test, which involves a chemical dye, stains the bacterium’s cell wall purple. On the other hand, gram-negative bacteria stain pink instead.

Facklamia species are Gram-positive, facultatively anaerobic bacteria that present a challenge for clinical labs to identify. It's α-hemolytic, catalase negative and is often misidentified as ...

Bacterial species, and even specific strains can be differentiated using a number of molecular techniques such as PCR, quantitative PCR, genome sequencing and mass spectrometry. But even without ...