Determine the concentration of monocytogenes enumerated from the apple slice based on the information below. You must draw your serial dilution and show your mathematical calculation to receive full credit. o The apple slice (12 g) was first mixed with 108 ml of sterile 0.1% peptone water. o After, 1 ml was added to tube containing 9 ml of sterile 0.1% peptone water. Process was repeated with two additional tubes. o 1 ml was pipetted from tubes 2 and 3 onto MOX media. o Plates were incubated at 37 for 48 hours. o The pictures below show the plates from tube 2 (left) and tube 3 (right).
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