title: Colour vision deficiency in on of two presumably monozygotic twins with secondary amenorrhoea.
mesh_terms: D000293:Adolescent; D000328:Adult; D000568:Amenorrhea / Q000150:complications*; D001789:Blood Group Antigens; D002648:Child; D002675:Child, Preschool; D003117:Color Vision Defects / Q000150:complications* / Q000235:genetics; D003878:Dermatoglyphics; D004200:Diseases in Twins; D004912:Erythrocytes / Q000201:enzymology; D005260:Female; D006242:Haptoglobins / Q000032:analysis; D006650:Histocompatibility Testing; D006801:Humans; D007621:Karyotyping; D016038:Skin Transplantation; D014168:Transferrin / Q000032:analysis; D014184:Transplantation, Homologous
chemical_list: D001789:Blood Group Antigens; D006242:Haptoglobins; D014168:Transferrin