Table 1.

Effect of several compounds on alanine and ammonium release from B. japonicum bacteroids

Addition	Alanine excreted*	Ammonium excreted*
None	0.42	0.03
Oxamate 10 mM	<0.01	0.28
CCCP 100 μM	<0.01	0.07
Ammonium 100 μM	0.55	ND†

^*Data given as ηmol/min/mg dry weight; values are average of three replicates 

^†Not determined because of the presence of exogenous ammonium.