Saccharomyces cerevisiae, or common bakers yeast, is the most commonly used among eukaryotic microorganisms, although {HEAD ~ a number} of {TAIL ~ other strains} are commonly available 
Saccharomyces cerevisiae , or common bakers yeast , is the most commonly used among eukaryotic microorganisms , although { HEAD ~ a number } of { TAIL ~ other strains } are commonly available
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