Charmaine and Maurits
Jan 02, 2016
Pheromones draw pairs of same species together
Mice pheromones attract male and female with different MHC
‘Major Histocompatibility Complex’Plays important role in immune system and
autoimmunityBeneficial: produce offspring with strong
immune system
Swiss zoologist Claus Wedekind set up first experiment
Recruited volunteers: 49 college women, 44 college men
Wide range of MHC genesConducted at Bern University, Switzerland
Asked men to wear a clean t-shirt for 2 days straight
Odourless soap and aftershaveAsked to remain odour neutralSweaty t-shirt returned after two daysPut into smell box with holes, one clean t-
shirt as control Women asked to sniff boxes, rated them