. "substance"^^ . . "100020090"^^ . . "a particular kind or species of matter with uniform properties; \"shigella is one of the most toxic substances known to man\""@en-us . "substance"@en-us . . . . "0"^^ . "00020090-n"^^ . . "a particular kind or species of matter with uniform properties; \"shigella is one of the most toxic substances known to man\""@en-us . . "0"^^ .