1 daughter colonies of the 4a were tested:
CH-50-1-33-2007
1 tested queens were mated at the mating station:
CH-50-1-601-2008
8 daughter colonies of queens mated at the mating station were tested:
CH-50-1-323-2009 CH-50-1-328-2009 CH-50-1-331-2009 CH-50-1-333-2009 CH-50-1-435-2009 CH-50-1-436-2009 CH-50-1-437-2009 CH-50-1-508-2009