Tao Zhang

A Normal Phenotype Case of a Small Supernumerary Marker Chromosome Chimeric Carrier with 12p11.21p11.21 Duplication.

BACKGROUND sSMC refers to an additional chromosome added to the karyotype of normal human chromosomes, which can be identified by cytogenetic techniques, but its source and structure cannot be determined, and its size is generally ≤ chromosome 20 during metaphase. The clinical phenotype of patients with sSMC can be nor...