The dimensions of the White House are as follows. The length is 168 feet (51.2 meters). The width is 152 feet with the porticoes. Without the porticoes it is 85 feet 6 inches (26.1 meters). The height is 60 ft 4 inches on the north. On the south it is 70 feet. The fence of the White House covers 18 acres.
A mobility shift assay is electrophoretic separation of a proteinâDNA or proteinâRNA mixture on a polyacrylamide or agarose gel for a short period (about 1.5-2 hr for a 15- to 20-cm gel).
Receptor Biology. Dr James Pease, Head of Group. The directed migration of cells in response to chemical signals is termed chemoattraction, and plays a major role in the temporal and spatial positioning of cells in both lower and higher order life forms.Chemoattractants bind to specific receptors on the cell surface.he directed migration of cells in response to chemical signals is termed chemoattraction, and plays a major role in the temporal and spatial positioning of cells in both lower and higher order life forms. Chemoattractants bind to specific receptors on the cell surface.