gentamicin-thallous-carbonate ( gtc ) medium contained ( per liter ) : 40.0 g of trypticase soy agar , 5.0 g of kh ( 2 ) po ( 4 ) , 2.0 g of nahco ( 2 ) , 1.0 g of glucose , 1.0 g of esculin , 0.5 g of thallous acetate ( ta ) , 0.5 g of ferric citrate , 0.75 ml of tween 80 , and 2.5 mg of gentamicin sulfate .
C0017436
gentamicin
C0546866
gentamicin sulfate