Chemist says he ca n't say for sure a decomposing body was in the car trunk . Toxicologist : " I can tell you that it is possible, but not likely. Casey Anthony is accused of killing her 2-year-old daughter , Caylee , in 2008 . ` I do n't know exactly when '' She has pleaded not guilty ; her defense says the child drowned in the family pool .
Chemist says he ca n't say for sure a decomposing body was in the car trunk . Toxicologist : " I can tell you that it is possible, but not likely. Casey Anthony is accused of killing her 2-year-old daughter , Caylee , in 2008 . She has pleaded not guilty ; her defense says the child drowned in the family pool .