AN ELDERLY WOMAN IS FOUND unconscious in a supermarket aisle. Unresponsive, she is rushed to the emergency room. Upon regaining consciousness, she complains of a severe pain in her abdomen. There are many possible reasons for the pain, so a pathologist is called in to help solve the mystery. Blood and urine samples are taken and the pathologist examines them under a microscope. What the pathologist sees leads to a conclusive diagnosis. Now that the...