2 daughter colonies of the 4a were tested:
AT-99-106-20062-1991 AT-99-106-20755-1991
4 tested queens were mated at the mating station:
AT-99-106-11130-1993 AT-99-106-13807-1993 AT-99-106-26132-1993 AT-99-106-27590-1993
4 daughter colonies of queens mated at the mating station were tested:
AT-99-106-13166-1995 AT-99-106-13170-1995 AT-99-106-15684-1994 AT-99-106-15730-1994