Gerald N. 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 "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."

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 "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." See less