alpha hemolytic streptococcus 释义 溶血性链球菌 行业词典 体育 甲型溶血性链球菌
Streptococcus are classified by their hemolytic properties with two species known to affect pregnancy—alpha-hemolytic streptococci (group A strep) and beta-hemolytic streptococci (group B strep). We will be detailing examples from group A strep and group B strep in the following section ...
Alpha-hemolytic species induce partial haemolysis of red blood cells in blood agar and oxidize haemoglobin to methaemoglobin, visible as a green zone, whereas beta-haemolytic species induce complete hemolysis, forming a clear zone. Nonhemolytic species do not induce hemolysis. Species are also ...
美 英 un.甲型溶血性链球菌 网络甲型链球菌 英汉 网络释义 un. 1. 甲型溶血性链球菌
any of several spherical bacteria of the genus Streptococcus, occurring in pairs or chains, species of which cause such diseases as tonsillitis, pneumonia, and scarlet fever. [1875–80; < New Latin; see strepto-, coccus] strep`to•coc′cal (-ˈkɒk əl) strep`to•coc′cic (...
The main species of the viridans group streptococci can be placed in either the bovis, mitis, anginosus, mutans, or salivarius group. Streptococcus mutans in general is alpha﹉emolytic, with a few strains exhibiting beta﹉emolysis, while S. criceti is nonhemolytic, with a few alpha﹉emolytic...
Like Alpha Hemolytic Streptococcus, members of this group are also Gram-positive bacteria that grow in pairs or form chains. Members of this group cause lysis of red cells using hemolysins O and S. Members of this group are divided into two main groups that include:...
Alpha hemolytic streptococci isolated from acute pneumonia and septicemia of Iowa swine. Proceedings of the Annual Meeting of the US Animal Health Association, 73, 589–594 Google Scholar Bungener, W. and Bialek, R., 1989. Fatal Streptococcus suis septicemia in an abattoir worker. European ...
The following day, alpha-hemolytic growth was seen in the blood and chocolate agar, but not in the Mac agar. The colonies were also found to be catalase-negative, and Gram staining revealed Gram-positive cocci in pairs. To determine the presence of S. cristatus, MALDI-TOF and Vitek 2 ...
Streptococcal species that fall into the β-hemolytic category include all species that can form a β-hemolytic zone, including S. pyogenes and S. agalactiae. Beta-hemolytic streptococci are also known as pyogenic hemolytic streptococci and have the highest pathogenicity. These are the causative agen...