As may be seen, the greater proportion of the CI4 in each culture can be accounted for in the COz evolved. The liquid culture products, exclusive of the COZ and cellulose, were radioactive and accounted for the remainder of the activity. These observations indicate that, while both the ethanol and acetate are extensively metabolized by A. xylinum, neither of these 2-carbon compounds, nor any fragments thereof, appeared in the final cellulose ...
