Fig. 73. Comparison of cultural growths when one ol two different sugars was used. The 

 mediums in the plates on the left contain technical dextrose and those on the right contain 

 technical maltose. The organisms, from the top down, arc T. gypseum, T. purpureum, M 



tanosum and \l. audouini. All the growths arc 1 month old. 



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