Mycobacterium avium complex (MAC) is a hereditary deficiency caused by a gene mutation that can be found in certain breed lines of miniature schnauzer, as a result of which dogs with the mutation run the risk of catching or developing a serious form of mycobacterial infection.

For some time there is a DNA test that allows to check if a dog is carrying this complex and the test of Merry showed that she is not carrying the gene. Obviously we are very happy with this result.