"Despite their opinion, you say homicide?" the attorney asked.
"I haven't changed my opinion," responded Blum.
Blum also denied Meczyk's suggestion that he manipulated his autopsy results to mesh with Will County State's Attorney James Glasgow's theory that Savio was murdered.
Blum testified earlier that Savio's circular tub also had no edges pronounced enough to cause the two-inch, straight-line wound on her head. Also, the position of Savio's body in the tub — face down and with her feet jammed against the sides of the tub — did not support a theory that she slipped and hit the back of her head, he said.
Peterson, a 58-year-old former suburban Chicago police officer, has pleaded not guilty to first-degree murder in Savio's death. He is also a suspect in Stacy Peterson's disappearance, although he has never been charged in her case. Authorities presume she is dead, though a body has never been found.
Peterson's attorneys maintain the original, 2004 autopsy on Savio's body by Dr. Bryan Mitchell was sound and that his finding of an accidental death holds up. Mitchell died in 2010.
Under cross examination by Meczyk, Blum conceded that the coroner who deemed Savio's death accidental had been respected in the field.
"He did an orthodox and professional autopsy?" the attorney asked.
"Yes, sir," Blum responded.
Earlier in the day, Blum testified that it was "extremely rare" for an otherwise healthy person to accidentally drown in a bathtub, unless alcohol or drugs were factors, which, he said, were not in Savio's case.
He also described how Savio's body was partly mummified and skeletonized by the time he examined it in 2007. He said decomposition was accelerated because water had gotten into her coffin. But, he said, autopsy work could still be performed.
Blum said he cut into parts of Savio's body, including on her hip, to discover that some bruises went almost to the bone, suggesting a major force caused the injuries. Blum also looked at photographs from the original autopsy and crime scene to make his determination.
Meczyk also repeatedly challenged Blum about how he could be sure Savio's bruises were freshly made before she died, suggesting a struggle or beating preceded her death. The defense attorney suggested there were other indications the bruises were at least days old.
Blum also conceded that no skin or blood was found under Savio's fingernails, which could have been an indication that she had been involved in a desperate fight for her life.
"You would expect that during a struggle, there would be ... DNA or tissue underneath the fingernails?" asked Meczyk.
"If the victim scratched the assailant, there may be. Correct," responded Blum.
Intellpuke: You can read this article by Associated Press Writer Michael Tarm, reporting from Joliet, Illinois, in context here: www.guardian.co.uk/world/feedarticle/10395832