title: A ring-20 chromosome.
mesh_terms: D002648:Child; D002653:Child Behavior Disorders / Q000235:genetics*; D002869:Chromosome Aberrations; D025063:Chromosome Disorders; D002903:Chromosomes, Human, 19-20; D004569:Electroencephalography; D004830:Epilepsy, Tonic-Clonic / Q000235:genetics; D006801:Humans; D008607:Intellectual Disability / Q000235:genetics*; D007621:Karyotyping; D007962:Leukocytes / Q000166:cytology; D008297:Male; D008831:Microcephaly / Q000235:genetics*; D008856:Microscopy, Fluorescence; D009061:Mouth Mucosa / Q000166:cytology; D011796:Quinacrine; D012728:Sex Chromatin / Q000032:analysis
chemical_list: D011796:Quinacrine