Gram-positive bacteria show blue or purple after Gram-staining in a laboratory test. They have thick cell walls. Gram-negative bacteria show pink or red on staining and have thin walls.

A total of 1,260 Gram-positive cocci were collected from nosocomial infections during the period of January, 1997, to December, 1999, in 4 Brazilian medical centers. In addition, 325 S. pneumoniae ...

The results indicated that gram-positive cocci were the predominant causative organisms among PJI patients, comprising 56.6% of the cases. Among these, coagulase-negative Staphylococcus (CoNS) were ...

In all but one case, a single pathogen was identified, mostly represented by gram-positive cocci belonging to genera Staphylococcus (n=5), Streptococcus (n=5), Aerococcus (n=1) and Abiotrophia (n=1).

Background—Infection is a serious complication of cardiovascular implantable electronic device (CIED) placement and requires device removal for attempted cure. Methods and Results—We studied the rate, ...

The interpretation of conventional glass Gram stain microscopy slides is both subjective and time consuming. The first step towards Digital Pathology is to convert Gram slides into Whole Slide Images ...

Gram’s staining of the synovial fluid from his left elbow revealed gram-positive cocci. The Gram’s stains of the fluid from his left wrist and right ankle were negative. No crystals were noted.

Gram stain showed a positive predictive value (PPV) of 84.7% for gram-negative rods in urine culture; however, the PPV was only 38.4% for gram-positive cocci.

First, gram-negative bacteria have a thin cell wall that is about 1.5 to 10 nanometers across, whereas gram-positive bacteria have a thick cell wall measuring about 20 to 80 nanometers.

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