Ring chromosome 18 in a mentally retarded boy.
D000293:Adolescent; D000886:Anthropometry; D001789:Blood Group Antigens; D001798:Blood Proteins / Q000032:analysis; D002869:Chromosome Aberrations; D025063:Chromosome Disorders; D002902:Chromosomes, Human, 16-18; D003878:Dermatoglyphics; D004798:Enzymes / Q000097:blood; D004912:Erythrocytes / Q000201:enzymology; D006801:Humans; D007136:Immunoglobulins / Q000032:analysis; D008607:Intellectual Disability / Q000097:blood / Q000235:genetics*; D007527:Isoenzymes / Q000097:blood; D007621:Karyotyping; D008141:Lordosis; D008297:Male; D008938:Mitosis
D001789:Blood Group Antigens; D001798:Blood Proteins; D004798:Enzymes; D007136:Immunoglobulins; D007527:Isoenzymes