The ABO system consists of A, B, AB, and O blood types. People with type A have antibodies in the blood against type B. People with type B have antibodies in the blood against type A. People with AB have no anti-A or anti-B antibodies.
Developmental dyslexia, or specific reading disability, is a disorder in which children with normal intelligence and sensory abilities show learning deficits for reading.
Dyslexia Singapore. Dyslexia is considered to be a generic word which covers all children and adults who have difficulty reading due to genetic or biological disturbances. Dyslexia is not just a disorder per se; it is a syndrome with many subtypes and anomalies which vary in degree of severity and in co-morbidity with other disabilities.