lethal concentration 50 [ LC50 | lethal concentration 50% | median lethal concentration | lethal concentration fifty ]
concentration létale 50 [ CL50,CL 50,LC50 | concentration létale 50 p. 100 | concentration létale 50 % | concentration létale moyenne | concentration létale médiane | teneur létale 50 p. 100 | teneur létale moyenne ]