Gay and straight people's brains respond differently to two human sex pheromones (AND, found in male armpit secretions, and EST, found in female urine).
Gay oder non-gay Individuen 'reagéieren ënnerschiddlech mat 2 Putative Geschlechter Pheromone (AND, an de Männer Arm-Pit Exkursiounen, och Est (gesäit an weiblech Pee).