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Acacia's Revise Series: Biology
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810308.Dxr
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00009_Field_9.txt
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1996-09-25
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242b
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4 lines
Milk is soured by the addition of bacteria. Rennet is an extract from sheep's
stomach. It causes sour milk to thicken and form clots which are the curds used
for cheese. The liquid substance, whey, is removed. The cheese is left to ripen.