Why capsulate staining is difficult, Biology

Assignment Help:

Why Capsulate Staining is Difficult?

Capsule staining is difficult because capsular material is soluble in water and may be dislodged or removed during vigorous washing. Negative staining can be used to visualize the capsule. Here presence of capsule is shown by mixing the bacteria in a loopful solution containing tiny colloidal suspension of coloured particles e.g. India Ink or nigrosin which cannot penetrate the cell or its capsule. After spreading the mixture in a thin film and air-drying, counter staining of cells is done with simple stains such as safranin, crystal violet etc. Capsule does not accept these dyes so appear as a halo surrounding coloured cells in a dark blue-black background.

 


Related Discussions:- Why capsulate staining is difficult

Why nutrition is important for health, Why Nutrition is important for healt...

Why Nutrition is important for health Nutrition is one of the basic components of  life. It is an essential part of health care. You already know that good nutrition  is essent

Explain the neurological and sensory system, Neurological and Sensory Syste...

Neurological and Sensory System There are three neurological systems: sensory, motor and autonomic. Sensory system consists of sensory receptors, sensory nerve fibres. Differen

Define cooking, Define cooking,blanching and Canning - thermal processing? ...

Define cooking,blanching and Canning - thermal processing? Cooking: Cooking is a primary process to make food more palatable and improve taste. This is not used as a preservati

Describe about the primary prevention - food allergy, Describe about the Pr...

Describe about the Primary Prevention - Food Allergy? Let us further, dwell on measures we could adopt in primary, secondary and tertiary prevention. Current research in primar

Which joint is stronger-the shoulder or hip joint, In general compare and c...

In general compare and contrast the three functional classifications of joints according to movement. What are two characteristics that make synovial joints unique and different fr

Diversity is good axioms of conservation biology, "Diversity is good" is on...

"Diversity is good" is one of the axioms of conservation biology. However in absentia of historical information, why is noting higher diversity in a system NOT the best way to eval

Describe the factors that affect cardiac, Describe the factors that affect ...

Describe the factors that affect cardiac output in a female athlete who is speed skating toward the finish line in an Olympic race.

Explain the eukaryotic gene expression , Explain the Eukaryotic Gene Expres...

Explain the Eukaryotic Gene Expression ? Eukaryotic cells regulate the transcription of individual genes, large parts of chromosomes, or even entire chromosomes. Gene expressi

How does the odor of flower petals help pollination, How does the odor of f...

How does the odor of flower petals help pollination? The purpose of the perfume is to attract a pollinator - insect, bat, bird or whatever. The reward for the pollinator is a m

Explain the causes of steatorrhoea, Q. Explain the Causes of steatorrhoea? ...

Q. Explain the Causes of steatorrhoea? The list of possible underlying causes of steatorrhoea includes: • Malabsorption • Malabiorptian of fats in small intestine •

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd