The lethal dose in adults is estimated to be 2 to 5 grams.
(The lethal dose in adults; is estimated; to be 2 to 5 grams) (The lethal dose in adults; to be; 2 to 5 grams)
The lethal dose in adults The lethal dose in adults
is estimated to be
to be 2 to 5 grams
2 to 5 grams