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Category: Bacteriology

Posted on November 22, 2020 Bacteriology Microbiology

Biochemical tests for identification of Gram-positive bacteria

Gram-positive bacteria retain the crystal violet dye by its thick layer of peptidoglycan and appear purple color when observed under the microscope after performing Gram... Read more

Posted on November 22, 2020June 11, 2021 Bacteriology Microbiology

Biochemical tests for identification of Gram-negative bacteria

Gram-negative bacteria are the pink or red-colored bacteria when observed under a microscope after Gram’s differential staining technique. They do not retain the crystal violet... Read more

Posted on November 17, 2020May 24, 2022 Bacteriology Microbiology

Staining: Gram staining, Acid Fast Bacilli Staining, Spore Staining, and Capsule Staining

“Stain” is a chemical reagent or dye that is responsible for the discoloration of the specimen. This use of stain for adding contrast for better... Read more

rapid diagnostic tests
Posted on November 8, 2020May 25, 2022 Bacteriology Immunology Protocols and Techniques

Rapid diagnostic test (RDTs): Uses, Principle, Types, Procedures, Reliability, and Interpretation of test results

Rapid diagnostic tests are serological tests that are used in preliminary medical screening or incase of emergency diagnosis. They either detect antibody (Ab) or antigen... Read more

Posted on November 8, 2020 Bacteriology

Biochemical Tests for the Identification of Bacteria: Types, Principle, Procedure, and Examples

Microorganisms undergo the metabolism process to maintain nutritional and functional cellular activities either catabolically or anabolically. Both processes occur simultaneously with the biochemical reaction which... Read more

Methods of Microbial Control
Posted on September 9, 2020September 9, 2020 Bacteriology Microbiology

MICROBIAL CONTROL AND THEIR TYPES

What is Microbial Control? The control (which means either to inhibit or remove and kill) of microorganisms so as to prevent the transmission of diseases... Read more

Posted on February 25, 2019May 24, 2022 Bacteriology

Wound Infection

Infection of soft tissues associated with pus formation Pus consists PMNs, bacteria, fibrin and other body fluids May be endogenous or exogenous Endogenous: source of... Read more

Posted on January 18, 2019May 24, 2022 Bacteriology

Antimicrobial Resistance and its Mechanism

Bacterial resistance to drugs is a condition in which the bacteria that were earlier susceptible to antibiotics develop resistance against the same antibiotics and are... Read more

Posted on December 28, 2018May 24, 2022 Bacteriology

Dilution Tests for Antibiotic Sensitivity Testing (Broth dilution, Agar dilution and E-Test)

Performed to determine the minimum inhibitory concentration (MIC) of an antimicrobial agent. MIC is defined as the lowest concentration of an antimicrobial agent that inhibits... Read more

Posted on November 28, 2018May 24, 2022 Bacteriology

Tuberculosis : Specimen Collection for Laboratory Diagnosis

Specimen Collection Pulmonary tuberculosis: threat to both patients and others so sample should be collected and handled in a safe manner. Successful identification of pathogens... Read more

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