FIG 3.
Effect of protein or RNA on the fermentation product profiles of anoxic microcosms of L. terrestris gut contents. The amounts of protein- and RNA-derived carbon added from filter-sterilized stock solutions approximated 1 mmol per microcosm (10 ml containing 1 gFW gut content). Controls lacked supplemental protein or RNA (protein or RNA alone did not display any fermentation activity). Values are the arithmetic averages from three replicate analyses, and error bars indicate the standard deviations. Some standard deviations are smaller than the size of the symbol and therefore not apparent. The multiplication factor for converting the values into mM is 0.1 (e.g., 100 μmol/gFW equals 10 mM). FW, fresh weight.