2023年8月8日 · Streptococcus pneumoniae is a gram-positive, lancet-shaped bacterium and a cause of community-acquired pneumonia. Pneumococcal infections are present throughout …

Streptococcus pneumoniae in clinical material occurs in two distinctive forms. Encapsulated, virulent strains isolated e.g., from sputum in patients with acute pneumonia, often forming …

The encapsulated, Gram-positive, coccoid bacteria have a distinctive morphology on Gram stain, lancet -shaped diplococci. They have a polysaccharide capsule that acts as a virulence factor …

2016年5月13日 · Streptococcus pneumoniae is characterized by a polysaccharide capsule that completely encloses the cell, and plays a key role in its virulence. The cell wall of S. …

2018年5月11日 · Shape – Streptococcus pneumoniae is an elongated round shape (coccus) bacterium with one end broad or rounded and the other end is pointed (flame shape or …

Streptococcus pneumoniae, or the pneumococcus, is a gram-positive coccus usually appearing as a diplococcus, but occasionally appearing singularly or in short chains. Cocci are slightly …

2024年8月2日 · Shape: Streptococcus pneumoniae cells are lancet-shaped, elongated cocci with a slightly pointed outer curvature. Arrangement: Commonly observed as pairs of cocci …