An expert hired by Karen Read ’s defense team was the subject of sharp cross-examination from a specially appointed prosecutor Tuesday as he sought to bar the expert from testifying at an upcoming trial to her belief that John O’Keefe’s arm injuries were caused by a dog attack before his death.
The expert, Dr. Marie Russell, testified over the course of two days about her experience, qualifications and methodology. Throughout both direct and cross-examination, she remained firm in her belief that wounds on O’Keefe’s right arm were caused by a dog bite, pointing to her years of experience treating such wounds in the emergency room…