Cockroach Antennae (image) North Carolina State University Caption These are electron microscopy images of ungroomed, groomed and hexane washed male cockroach antennae. Grooming keeps olfactory senses keen. Credit NC State University Usage Restrictions None Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.