[Solved] Some intracellular pathogens produce phagocyte-killing proteins called ________ that kill the phagocyte after ingestion of the pathogen. A) antibodies B) antigens C) leukocidins D) pus Assassin Bug: A member of the Reduviidae family, known for their predatory behavior and method of injecting toxic saliva into their prey. Sleeping Cluster: A behavior observed in some animals, including naked mole rats, where individuals sleep closely together for warmth, safety, or social bonding. Peripheral: Relating to or situated on the edge or outer limits of something, often used to describe objects or areas that are not central or core to a main subject. Fitness Benefit: Fitness benefits are advantages gained that increase an individual's reproductive success and chance of passing genes to the next generation.