Microbiology
Xylose lysine deoxycholate (XLD) agar is better selective medium than the deoxycholate citrate agar (DCA) because

it is selective
it is less inhibitory to S. Dysentriae and S. flexneri
it imparts better growth
it contains high salt concentration

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Microbiology
Which of the following is true to prevent botulism from smoked fish?

Good sanitation should be maintained throughout production and handling
The fish should be heated at its coolest part to at least 82°C for 30 min during or after smoking
Fish should be immediately frozen after packaging and kept frozen
All of these

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