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The opacity of a microbial colony can be described as transparent, translucent, or opaque. Staphylococci are usually opaque, [1]: 167–8 while many Streptococcus species are translucent. [4]: 188 The overall shape of the colony may be characterized as circular, irregular, or punctiform (like pinpoints). The vertical growth or elevation of the ...
N. sphaerica colonies grow rapidly and appear hairy or woolly. [6] The conidiophores are short and clustered surfacing from mycelium. [7] They appear translucent in colour and have an average range of 8-11μm in diameter. [1] The conidiophores are often straight stalks or slightly curved. [6] Conidia grow from the tips of the translucent ...
Pseudomonas is a genus of Gram-negative bacteria belonging to the family Pseudomonadaceae in the class Gammaproteobacteria.The 348 members of the genus [2] [3] demonstrate a great deal of metabolic diversity and consequently are able to colonize a wide range of niches. [4]
The colony morphology itself also displays several varieties. The main two types are large, smooth, with a flat edge and elevated center and small, rough, and convex. [83] A third type, mucoid, can also be found. The large colony can typically be found in clinal settings while the small is found in nature. [83]
enterocolitica produces 1.5mm colonies with a dark pink center and translucent border. [ 6 ] [ 5 ] Y. enterocolitica is a heterogeneous group of strains, which are traditionally classified by biotyping into six biogroups on the basis of phenotypic characteristics, and by serotyping into more than 57 O serogroups, on the basis of their O ...
Parasutterella species are Gram-negative, coccobacilli (circular and rod-shaped), strictly (or obligate) anaerobic, non-motile bacteria. [1] [2] When cultured, colonies from both P. excrementihominis and P. secunda appeared translucent to beige in color, convex and circular in shape, and extremely small in size.
B. wadsworthia must be incubated on BBE agar for at least 3 days in order to see colony formation. Two types of colonies appear. A 1-2 mm diameter convex and irregular colony with a black center [5] or a translucent umbonate and circular colony with a dark center. BBE agar is the optimal agar for B. wadsworthia colony growth.
EMB is a differential microbiological media, which inhibits the growth of Gram-positive bacteria and differentiates bacteria that ferment lactose (e.g., E. coli) from those that do not (e.g., Salmonella, Shigella). [2] Organisms that ferment lactose appear dark/black or green often with "nucleated colonies"—colonies with dark centers. [3]
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