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Dr. Andrew Rynne
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Dr. Andrew Rynne

Family Physician

Exp 50 years

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How To Recognize Organism As Per Morphological Characteristics?

i worked with a laboratory unit, i did alot of test, but right now i will have to go back, please my question is when doing a culture test for hvs, urine, stool e.t.c, how do we recognise the organism per morphological characteristics ion agar growth.. and are we looking for just bacteria infection?
posted on Fri, 14 Mar 2014
Twitter Sun, 25 May 2014 Answered on
Twitter Mon, 26 May 2014 Last reviewed on
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Pathologist and Microbiologist,  's  Response
Hello and welcome to HCM,
The culture of any sample -urine, stool, blood is done on culture media.
The infectious agent bacteria or fungus grows in the form of colonies.
Each bacteria and fungus has characterised morphology, characteristic color and other features.
These bacteria and fungus are identified based on their colony characteristics.
Further to study the individual characters of the organism, a part of the colony is smeared and stained with stains like Gram's stain and viewed under microscope.
Viruses cannot be cultured on culture media.

Thanks and take care
Dr Shailja P Wahal


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How To Recognize Organism As Per Morphological Characteristics?

Hello and welcome to HCM, The culture of any sample -urine, stool, blood is done on culture media. The infectious agent bacteria or fungus grows in the form of colonies. Each bacteria and fungus has characterised morphology, characteristic color and other features. These bacteria and fungus are identified based on their colony characteristics. Further to study the individual characters of the organism, a part of the colony is smeared and stained with stains like Gram s stain and viewed under microscope. Viruses cannot be cultured on culture media. Thanks and take care Dr Shailja P Wahal