while others did not retain the stain. The first group was dubbed "gram-positive," while the latter was designated "gram-negative." Related: Dangerous 'superbugs' are a growing threat, and ...

All patients with suspected Gram-negative endocarditis should undergo transesophageal echocardiography (TEE) to confirm the diagnosis and assess for cardiac complications such as intracardiac ...

This test is important in the identification of both Gram-positive and Gram-negative species ... II to react with the NO 2- and form the red pigment (a verified negative result). If no color change ...