Eric Walker added Down's syndrome: specific genes in chromosome 21 found to be the cause of learning and memory problems to Down's syndrome

Eric Walker added Down's syndrome: specific genes in chromosome 21 found to be the cause of learning and memory problems to Down's syndrome, and added Down's syndrome to Neurological diseases and disorders

Eric Walker added a number of topics and a number of links to Neurological diseases and disorders, and added Neurological diseases and disorders to Sickness, ailments, disease and diseases and Neuroscience, neurology and the nervous system