Streptococci are also differentiated by their ability to produce hemolysis on blood agar; most pathogenic streptococci (groups A, B, C, and G) produce complete or β hemolysis on blood agar. There are six general categories of streptococci recognized: pyogenic, oral, enterococci, lactic, anaerobic...
was made after stool specimens from several subjects grew clear colonies onMacConkey agar and yellow colonies on TCBS agar. Which key tests would helpeliminate Aeromonas and Plesiomonas spp.?A. Mannitol fermentation, Na+ requirementB. Oxidase, motilityC. Oxidase, nitrateD. Hemolysis on blood agar,...
pyogenes in blood cultures is unlikely to be missed during routine analysis, as it shows marked beta-hemolysis on blood agar culture plates, which generally leads to further characterization of the bacteria. Susceptibility to penicillin, ceftriaxone, and macrolides seems to be retained and the ...
He found that on blood-agar plates made according to the formula of Schottmiiller a type of hemolysis is produced by Streptococcus mitior which he describes as follows: "hemolytic zone in mitior appears rarely in 24 hours, most often at 48 to 96 hours' incubation; microscopically one finds ...
Though totally devoid of pneumolysin, these strains produced alpha hemolysis on blood agar when incubated aerobically... A Sanjeewa,KW Samarakoon,YJ Jeon - World Aquaculture 被引量: 29发表: 2015年 Preparation of angiotensin-? converting enzyme inhibitory peptides from shark muscle The effects of ...
GAS pharyngitis may be diagnosed presumptively by culturing colonies of gram-positive cocci displaying surrounding zones of beta-hemolysis on blood agar. Other beta-hemolytic streptococci may colonize the oropharynx (e.g., group C and G streptococci), and differentiation is by demonstration of growth...
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Its ability to cause hemolysis on blood agar plates allows it to be distinguished from other more indolent streptococci [11]. Furthermore, GAS has numerous virulence factors that enable it to evade host immune defenses, colonize epithelial surfaces, and cause infection [12, 13]. GAS can cause ...
05HAS68 exhibited typical a-hemolysis on pig blood agar, and showed a lower hemolytic activity compared with 05ZYH33 (Fig. S1), which may due to its absence of suilysin. However, 05HAS68 displayed significantly enhanced adherence cap- ability to the Hep-2 cells (Fig. 4B). A plausible ...
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