What is the Gram stain reaction for Staphylococcus epidermidis?
What is the Gram stain reaction for Staphylococcus epidermidis?
Staphylococcus epidermidis is a gram-positive and coagulase-negative staphylococci, and one of over 40 species belonging to the genus Staphylococcus.
What stain is used for Staphylococcus epidermidis?
The Staphylococcus epidermidis is decolorized and the counterstain colors them blue. See table for acid-fast stain.
What color is Staphylococcus epidermidis Gram stain?
Staphylococcus epidermidis is a very hardy microorganism, consisting of nonmotile, Gram-positive cocci, arranged in grape-like clusters. It forms white, raised, cohesive colonies about 1–2 mm in diameter after overnight incubation, and is not hemolytic on blood agar.
Is epidermidis Gram-positive or negative?
Staphylococcus epidermidis which is known as a coagulase-negative and Gram-positive Staphylococcus, is one of the five significant microorganisms that are located on human skin and mucosal surfaces with the ability of causing nosocomial infections due to the wide usage of medical implants and devices, hence until 1980 …
What type of hemolysis is Staphylococcus epidermidis?
Staphylococcus is usually either beta hemolytic or not hemolytic at all (called gamma hemolysis). Pathogenic Staphylococci can produce a variety of virulence factors, including toxins,coagulase, leucocidins, and hydrolytic enzymes that can damage host tissues.
Is Staphylococcus epidermidis acid fast stain?
The darker staining cocci are Staphylococcus epidermidis , a non-acid fast bacterium.
What is the hemolysis of Staphylococcus epidermidis?
Does Staphylococcus epidermidis grow on MacConkey Agar?
MacConkey agar selects for organisms like Escherichia coli (Gram negative bacilli) while inhibiting the growth of organisms like Staphylococcus aureus (Gram positive cocci).
Is S. epidermidis alpha or beta hemolytic?
On blood agar, S. aureus is usually beta- hemolytic, S. epidermidis and S. saprophyticus are almost always nonhemolytic.
Does Staphylococcus epidermidis grow on EMB agar?
Occasionally, some Gram-positive bacteria, such as Enterococcus and Staphylococcus will grow on this medium, but usually as pinpoint colonies. Non- pathogenic, non-lactose-fermenting organisms may grow on EMB agar as well.
Is Staphylococcus epidermidis acid-fast positive or negative?
The darker staining cocci are Staphylococcus epidermidis , a non-acid fast bacterium. The capsule of Klebsiella pneumoniae is demonstrated here. This is a combination of a negative stain and a simple stain. The pink bacilli can be seen within a clear capsule.