More bad news for Casey Anthony's defense team.
An Orlando judge ruled late Wednesday that controversial chloroform evidence can be presented to the jury at Casey's upcoming murder trial.
She's accused of killing her 2-year-old daughter Caylee in the summer of 2008. The child's remains were found in a wooded area near their home in December of that year.
An expert in the field of human decomposition said the amount of chloroform found in the trunk of Casey's car was 10,000 times more than he would expect to see.
The defense wanted the evidence tossed out, saying the methods used were flawed.
Legal experts says the ruling is another big blow to Casey's defense.
"What this may well do is take away the defense argument that this was an accident," Bill Sheaffer told Orlando station WFTV.
Orange County Chief Judge Belvin Perry has already ruled that other critical evidence can be used at trial, including a stain the trunk of the car, a strand of hair also found in the trunk, cadaver dog reaction and residue found on duct tape placed across Caylee's mouth.
Sheaffer said it will be a tough, uphill battle for the defense.
Several other key rulings are expected soon.
Jury selection is set to begin May 9 outside of Orlando. The panel will be sequestered once trial, expected to last five weeks, begins May 17.