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 ...

Staphylococcus aureus bacteria are pathogens to both man and other mammals. They are gram positive bacteria that are small round in shape (cocci) and occur as clusters appearing like a bunch of grapes ...

The present report deals with the in vitro anti-microbial activity of novobiocin and its efficacy in the treatment of a variety of surgical infections due to staphylococci and other gram-positive ...

The patient has a month of progressive failure to thrive and a cough. Workup is negative as an outpatient, and he is given a week of prednisone for RAD. He improves, then worsens. Seen in the ER, he ...

There are many ways of classifying bacteria. One method is based on the cell membrane. In 1884, a bacteriologist named Christian Gram created a test that could determine if a bacterium had a thick, ...

Gram staining was developed in the 1800s as a quick and simple procedure to distinguish between Gram positive and Gram negative bacteria. It is one of the first laboratory techniques taught to ...