Hello! thank you for the explanation but I ma still confused how to differentiate normal flora and pathogen. For example, at minute 8:34 I thought it was pathogenic because it was a lot of growth on blood agar and chocolate agar. How to really consider if one is pathogenic?
Basically, it comes down to knowing what organisms are normal flora for the different body sites and what those organisms may look like on the plate in conjunction with the Gram stain results. The Susceptibility discs were placed on the the blood agar plate to help speciate those that appeared as they may have been a strep species. You can always perform a Gram stain and a couple of the quick biochemicals (catalase, PYR, oxidase, etc. ) to help decide whether to work up the colonies
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I love your videos. Thank you so much. Very very helpful ☺️
Extremely helpful. Thank you!
I forgot about your videos. I'm in core lab now, but want to go into micro, so hopefully I remember to watch these as part of my study.
What organisms are you looking for in the rectal sample?
Hello! thank you for the explanation but I ma still confused how to differentiate normal flora and pathogen. For example, at minute 8:34 I thought it was pathogenic because it was a lot of growth on blood agar and chocolate agar. How to really consider if one is pathogenic?
Basically, it comes down to knowing what organisms are normal flora for the different body sites and what those organisms may look like on the plate in conjunction with the Gram stain results. The Susceptibility discs were placed on the the blood agar plate to help speciate those that appeared as they may have been a strep species. You can always perform a Gram stain and a couple of the quick biochemicals (catalase, PYR, oxidase, etc. ) to help decide whether to work up the colonies