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 ...

A study led by researchers at the University of Arizona College of Medicine—Tucson showed that giving the antibiotic azithromycin did not help preschool children seen in the hospital emergency room ...

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 ...

A maternal response to ascending bacterial infection often results in neutrophilic infiltration of the placental membranes and chorionic plate (chorioamnionitis). Conversely, acute vasculitis of ...