Serology and forensic DNA analysis involves the examination of crime scene evidence to assist in identifying or exonerating individuals in criminal investigations. In this video, our scientist is checking a knife for the presence of blood. 🩸 👀 First, she visually inspects the knife with her naked eye. 🔬Next, she looks at potential blood stains under the microscope. Blood typically displays at least one of the following characteristics: ♦️ Red-brown color ♦️ Shiny surface ♦️ Crackling Finally,