"NegGram"@en-us . "nalidixic acid"@en-us . "0"^^ . . . . . . "103806040"^^ . . . "antibacterial agent used especially to treat genitourinary infections"@en-us . "nalidixic acid"^^ . . "03806040-n"^^ . "0.125"^^ . . . . "103663075"@en-us .