2992753 LSDC lateral sequence diagonal couplets 2 2992754 LSDC laser scanning digital camera 1 2992759 LSDC light-to-stimulus duration converter 1 2992758 LSDC local scaffold diversity-contributed generator 1 2992757 LSDC loneliness and social dissatisfaction component 1 2992755 LSDC Longitudinal Study of Danish Centenarians 1 2992756 LSDC low seeding density culture 1 2992760 LSDC LSD complex 1