Sohzi
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Wow awesome.
So...
(21 plaques/ 0.1 mL plated) x 10^5
= 2.1x10^7 PFU/mL
So I did it perfect? 100%?
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So if we do that four times it becomes 10000 more dilute. Is that my dilution number I'm looking for?
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Plaque assay is performed beggining with a 10 mL phage solution. The solution is serially diluted 4 times by taking 1 mL and adding it to 9 mL. 0.1 mL of the final dilution is plated & yields 21 plaques. What is the initial density of the starting phage solution?
So here's what I know. Density= (# of colonies formed/ mL plated) x Dilutionbefore plating
# of colonies formed is 21.
Now I'm assuming the mL plated is 0.1 mL?
And as for the the dilution I am stuck. Is there a way I can figure out how to calculate that?
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Orange
in Brain Teasers and Puzzles
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Create a fire by lighting the orange peels and then stop it by pouring the orange juice on it!