Techniques in Microbiology Lab

INTRODUCTION TO REAL TIME POLYMERASE CHAIN REACTION (RT PCR)

The polymerase chain reaction (PCR) is one of the most powerful technologies in molecular biology. Using PCR, specific sequences within a DNA or complementary DNA (cDNA) template can be copied, or “amplified”, many thousand- to a million-fold using sequence-specific oligonucleotides (or primers), heat-stable DNA polymerase, and thermal cycling. In traditional (endpoint) PCR, detection and quantification […]

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HOW TO DESIGN PRIMERS FOR YOUR PCR EXPERIMENT

Primers are short stretches of DNA that target unique sequences of a DNA molecule and help identify a unique part of a genome or a gene to be copied further. They are usually 18 to 25 nucleotides long. Primers can be synthesized and used for your PCR (polymerase chain reaction) and other molecular biology experiment

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DIFFERENTIAL COUNT FOR CSF

AIM: To provide information on the different white blood cells (neutrophils, basophils, eosinophils, lymphocytes, monocytes) present in the cerebrospinal fluid (CSF) specimen. MATERIAL/APPARATUS: CSF specimen, methylene blue stain, microscope, glass slide, water, Bunsen burner, inoculating loop, immersion oil. METHOD/PROCEDURE FOR DIFFERENTIAL COUNT OF CSF SAMPLE REPORTING OF THE RESULT: Report the number of the different

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HAEMOCYTOMETER CELL COUNT FOR CSF SAMPLE

Cells of mammalian or prokaryotic or eukaryotic cells can be counted in the lab from samples using different kinds of counting chmabers. The neubauer counting chamber is one major type of counting chamber generally used for counting cells, manually in the microbiology laboratory. Improved neubauer counting chamber is a manual chamber or haemocytometer that allows

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Important techniques in microbiology laboratory

DIRECT PLATE COUNTING Direct plate counting is a microbiological technique used to evaluate the actual bacterial content of a product or specimen; and it gives an estimate of viable or living cells present in a sample. It is usually carried out by plating an aliquot of the sample on solid agar medium that supports the

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The 3 Rs (Reduction, Refinement, Replacement): Guiding Principles in the Use of Animals For Biomedical/Scientific Research

The use of laboratory animals including mice, rats, rabbits and primates for scientific/biomedical research is guided by some principles and ethical guidelines that ensure the optimum care, protection and security of animals used in scientific investigations. Animal research is a very important procedure in biomedical research through which novel drugs are tested and scientific knowledge

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RATIONALE FOR THE CONTINUED USE OF ANIMALS FOR RESEARCH

Animals including (primates, dogs, cats, rabbits, mice) are still being used to conduct scientific/biomedical research because of some of the following reasons: References Alberts B, Bray D, Johnson A, Lewis J, Raff M, Roberts K andWalter P (1998). Essential Cell Biology: An Introduction to the Molecular Biology of the Cell. Third edition. Garland Publishing Inc.,

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Issues Surrounding the Use of Animals in Scientific Research

Animals such as mice, rats, rabbits, monkeys and primates are used in biomedical research to test the efficacy and toxicity of novel drugs and vaccines prior to their general usage in humans and animals for therapeutic purposes. The use of animals to do research whose results will in turn be extrapolated to humans is hinged

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INCUBATION & STERILIZATION TECHNIQUE

Microorganisms are incubated in the incubator at different temperatures and time interval depending on the oxygen requirement of the organisms amongst other vital conditions required for optimum growth. Incubation technique is a microbiological procedure which is used to maintain microbial cultures of culture media at a particular ambient temperature at different time intervals. Microbial cultures

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CULTURING TECHNIQUE

Culturing technique is used for the propagation of microorganisms in the microbiology laboratory; and it is an important procedure required for studying the morphological characteristics of microbes especially on solid culture media. Microorganisms are cultured in various ways and in various conditions using different growth media (inclusive of solid media or broth/liquid media). Bacterial growth

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