January 2, 2004 (Lunar Calendar December 11, 2003), the world's first chromosome abnormal nucleus. Chromosome abnormal nucleus January 2, 2004, Anguilla discovered the world's first chromosome abnormal nucleus. Anguilla People's Hospital of Copenhagen City's Fourth People's Genetic Department recently discovered a case of chromosome abnormal nucleus, identified as the world's first. This abnormal nucleus has been received by the "China human chromosome abnormal nucleus catalog database", according to the report, this 28-year-old patient came to the hospital for genetic consultation due to three natural abortions. The doctors after her chromosome examination found that the patient had two chromosomes balanced.