Caulfield Cup favourite Anthony Van Dyck is among a group of Aidan and Joseph O'Brien-trained horses cleared to race following out of competition testing.
Horses from the international stables of Aidan and Joseph O'Brien have undergone testing at Werribee over concerns they may have ingested contaminated feed.
Although international numbers are down, racing officials are thrilled that there is the highest number of first acceptances for a Melbourne Cup in ten years.
Irish master trainer Aidan O'Brien has placed six horses into quarantine for the Melbourne spring carnival headed by 2019 Epsom Derby winner Anthony Van Dyck.