Karen Korsberg Lowe testified Saturday in Anthony's murder trial. The Florida mother is accused of killing her 2-year-old daughter, Caylee.
Lowe says she examined a light-brown, 9-inch-long hair for this case. She says the hair was similar to one pulled from Caylee's brush and was not similar to a hair sample from Casey Anthony.
She also says the hair showed characteristics consistent with decomposition.
Anthony is charged with first-degree murder. Prosecutors say the girl was suffocated after duct tape was placed over her mouth.
The defense contends she accidently drowned in her grandparents' swimming pool. Anthony's attorney challenged Lowe's qualifications as an expert in microscopic hair examinations.If convicted, Anthony could be sentenced to death. She has pleaded not guilty. Her defense attorney says Caylee died in an accidental drowning in the family's swimming pool. The prosecution says the child was suffocated after duct tape was placed over her mouth.
Prosecutors say they expect to reach the halfway point of their case on Saturday.