Gram-positive cocci are often isolated from clinical samples. It is important to be able to distinguish these organisms from one another because while some are normal flora, others can be pathogenic.

Acute, relatively mild infections in patients who have not recently received antibiotic therapy can often be solely directed at aerobic Gram-positive cocci. Infections that are chronic ...

"Normal flora" include Streptococcus pneumoniae, Haemophilus influenzae, Staphylococcus aureus, and anaerobes such as Bacteroides species, anaerobic gram-positive cocci, and Fusobacterium species.

LPS is an endotoxin that is important in triggering the body’s immune response. Gram-negative cells will stain pink with the Gram stain. If your staining procedure was successful you will see Gram ...

Among the bacteria identified were gram-positive cocci, which can lead to skin infections, and antibiotic-resistant gram-negative rods. The study noted that free weights had 362 times more bacteria ...