Micrococcus luteus

Micrococcus luteus are Gram-positive, to Gram-variable, motile -non motile, that are 0.5 to 3.5 micrometers in diameter and usually arranged in tetrads or irregular clusters. They ...

Gram stain of Lactobacilli

Lactobacilli are large, Gram-positive rods, that occur singly and in chains. they are part of the normal vaginal flora

Bacterial colony morphology

Staphylococcus – Mannitol Salt Agar Plate

Mannitol salt agar (MSA) is a differential and selective media. It is selective because its high salt concentration (7.5 %) inhibits the growth of most bacteria. However, Staphylococcus ...

Effects of Oxygen on Microbial Growth- Thioglycollate

Definitions used in bacterial fields

Eosin methylene blue agar (EMB)

Eosin methylene blue agar (EMB) is a selective and differential medium used to isolate fecal coliforms. Eosin Y and methylene blue are pH indicator dyes which combine to form a dark ...

Ziehl-Neelsen acid-fast staining procedure

Colonies of Staphylococcus aureus on blood agar surrounded by wide zones of beta-hemolysis.

Colonies of Staphylococcus aureus on blood agar

Colonies of Staphylococcus aureus on blood agar surrounded by wide zones of beta-hemolysis.
Different bacterial shapes

Different bacterial shapes

Different types of bacterial hemolysis on blood agar

  Different types of bacterial hemolysis on blood agar : Staphylococcus – Hemolysis. A=Beta Hemolysis B=Alpha Hemolysis C=Gamma Hemolysis        

Colony isolation technique

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