DAYTON, Ohio -- The last of three expert witnesses gave testimony Tuesday in a pre-trial hearing for China Arnold. Now, Montgomery County Common Pleas Judge John Kessler must decide if their testimony will be heard during trial.

Three experts have given testimony in the last week in the case of China Arnold, the Dayton mother accused of killing her newborn daughter, Paris Talley, in a microwave oven.

The third and final expert to testify Tuesday was Doctor George Nichols, a forensic pathologist for the defense. Dr. Nichols disputed claims by a prosecution expert that China Arnold's daughter died after being burned in the microwave for as long as two minutes back in 2005.

Dr. Nichols disputed an experiment by the prosecution that used a chicken's body and calves brains in a microwave to simulate the deadly injuries to the baby girl.

Over the past week, three experts have offered opinions at the hearings--two for the defense, and one for the prosecution.

Judge John Kessler is expected to issue a written ruling Friday to determine if all, some or none of the experts will testify at China Arnold's murder trial, set to begin Jan. 28. Arnold could face the death penalty if convicted.