Yeast (Saccharomyces Cerevisi^) 



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AscospoRE Formation in Yeast 



(The capsule of the parent cell around the spores 



is invisible) 



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MiTROGEN Fixing Bacteria from 

 Rootlet-Nodules (Subculture) 



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Bacillus of Tetanus 



(From broth culture, showing spore formation) 

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By permission of the Scientific Press^ Limited 



