Between XX and XY: Intersexuality and the Myth of Two Sexes Reprint Edition

“Callahan does a good job of exploring intersex individuals, who are neither male nor female, and argues that they need to be accepted for what they are and not viewed as defective.” —Publishers Weekly

“Callahan’s writing style is both accessible and engaging; it reads more like creative non-fiction, a la Malcolm Gladwell.” —Ms. Magazine

“Immunologist Callahan takes a fascinating look at the biology and human experience of intersexuality, a state in between male and female.” —Discover Magazine

“The book is really beautifully written, highly accessible, and visionary in its own right.” —Feministing

“There are lots of interesting nuggets here–for example, Callahan’s description of biological sex as a spectrum, not a binary system.” —Double X

“This is a fascinating, easily understandable journey into why we are born male or female and examines our age-old obsession with sex.” —Fort Collins Coloradoan