Popular

Gram Staining: Principle, Procedure, Results

Gram Staining: Principle, Procedure, Results

Gram-positive bacteria retain the crystal violet-iodine complex and stain purple, whereas gram-negative bacteria stain pink.

Catalase test: Principle, Procedure, Results, Uses

Catalase test: Principle, Procedure, Results, Uses

Catalase test is used to distinguish among Gram-positive cocci. Staphylococci are catalase-positive but Streptococci are catalase-negative.

Blood Agar and Types of Hemolysis

Blood Agar and Types of Hemolysis

Blood agar is an enriched medium which supports growth of gram-positive cocci and differentiates them on the basis of hemolysis (α, β, or γ).

MacConkey Agar: Composition, Uses, Colony Characteristics

MacConkey Agar: Composition, Uses, Colony Characteristics

Selective (against gram-positive bacteria) and differential culture medium (LF and NLF), commonly used for the isolation of enterics.

Triple Sugar Iron (TSI) Agar: Principle, Results, and Interpretation

Triple Sugar Iron (TSI) Agar: Principle, Results, and Interpretation

TSI test determines whether a gram-negative rod utilizes glucose, and lactose or sucrose fermentatively and forms hydrogen sulfide.

Bacterial Culture Media: Classification, Types, Uses

Bacterial Culture Media: Classification, Types, Uses

Bacteria can be grown in an artificial medium in the laboratory. Growth medium can be broth, agar or biphasic. Medica can be categorized based on functions.