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Negative Staining – Principle, Procedure, Result

Negative Staining result

In negative staining method, an acidic dye is used known as India Ink or Nigrosin. When the bacterial cells are exposed to this stain, due to the presence of acidic nature it readily gives up a hydrogen ion (proton) and the chromophore. As a result, the dye becomes negatively charged, now the bacterial cell surface deflects the stain.

Northern Blotting – Protocol, Principle, Application, Result

Northern Blot Protocol, Principle, Application, Result

Northern blotting or Northern hybridization is a widely used technique in molecular biology to determine the molecular weight of mRNA and to measure relative amounts of mRNA present in different samples and for identifying alternatively spliced transcripts and multigene family members.

Top 17 Books for Genetics

Top 17 Books For Genetics

In this article i will share best and top recommended books for Genetics and Microbial genetics. The best buying link also provided at the end of each book. 1. Concepts of Genetics Author: William Klug, Michael Cummings , Charlotte Spencer , Michael Palladino , Darrell Killian. Concepts of Genetics emphasizes the fundamental ideas of genetics, while exploring … Read more

Differences Between Sensitivity, Specificity, False positive, False negative

Differences Between Sensitivity, Specificity, False positive, False negative

In many domains, including medicine, statistics, and machine learning, it is vital to comprehend the complexities of diagnostic tests and their outcomes. There are four key principles that come into play when assessing a diagnostic test’s efficacy: sensitivity, specificity, false positives, and false negatives. Confusion and incorrect interpretation of test results can result from the … Read more

Protein Synthesis (Translation)- Definition, Steps, Sites, Machinery

Protein Synthesis (Translation)- Definition, Steps, Sites, Machinery

What is Protein Synthesis? Protein synthesis is a fundamental biological process that occurs within cells, responsible for the formation of proteins through the assembly of amino acid chains, termed polypeptides. This process is pivotal to the central dogma of genetics and is instrumental in maintaining cellular function and structure. The process of protein synthesis can … Read more

Hybridization Probes – definition, uses, Preparation, Types.

The firefly (ATP-dependent) lucifer-luciferinase reaction

Hybridization Probes Definition Hybridization probes are a small nucleotide sequence that is used for the detection of complementary sequences (DNA or RNA) in a nucleic acid sample. DNA Probes detects the complementary DNA with the help of a hybridization reaction. This is achieved by permitting the probes to base pair with the sample nucleic acid … Read more

cDNA Cloning – Definition, Principle, Steps, Applications

Complementary DNA or cDNA cloning - Principle, Steps 

What is cDNA cloning? Definition of Complementary DNA or cDNA Complementary DNA (cDNA) is a form of DNA synthesized from a messenger RNA (mRNA) template through the action of the enzyme reverse transcriptase. It represents the coding sequence of genes and is commonly used in gene cloning and expression studies. cDNA Cloning Definition cDNA cloning … Read more

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