Gerald Callahan

Gerald N. Callahan is a professor in the Department of Microbiology, Immunology, and Pathology and the Department of English at Colorado State University in Fort Collins, where he lives with his wife and dog. He is the author of Lousy Sex; Between XX and XY: Intersexuality and the Myth of Two Sexes; Faith, Madness, and Spontaneous Human Combustion: What Immunology Can Teach Us about Self-Perception; Infection: The Uninvited Universe; and River Odyssey: A Story of the Colorado Plateau; and co-author of Basic Veterinary Immunology.

Creating Self in an Infectious World

For arthropods, male-versus-female sex has more to do with infections than it does with genes or chromosomes.