It comes down to applying very short laser pulses with just the right carrier frequency. (sciencedaily.com)
For other breeds the estimates of carrier frequency range from < 1 % in Labrador Retrievers to 50 % in the Black Russian Terrier breed [3]. (optigen.com)
So far this mutation has been detected in this breed only, with an estimated carrier frequency of 25 % based on a large number of samples collected form dogs originated from Finland, Sweden, United Kingdom and United States. (optigen.com)