program_faq  Click for FAQs about MDR1 in Aussies.

program_askexpert   Click to e-mail one of our volunteer experts with MDR1 questions.

Or use the search box in the upper right or the menu to the left to find information you want on MDR1 in Australian Shepherds.

The MDR1 Mutation  gives you a brief  description about the effects of this mutation in dogs.

Yes or No? lays out how breeders can best deal with the MDR1 mutation.