The Influences Exerted on the Bone Marrow by the Blocking of Parasympathetic Nerves Part 2 Influences on the Bone Marrow Culture of the Femur with Cover-Slip Method by Blocking Lumbosacral Segments of Spinal Cord of Dog

By sectioning the posterior roots of the fifth, sixth, and seventh lumbar regions of spinal cord as well as the first sacral segment on the left side of young dog, the author has studied the influences on the bone marrow culture of the femur with cover-slip method, comparing those on the right side as the control; and obtained the following results: 1) The relative value of growth area is lower as compared with that of the control. 2) Cell density is likewise lower than that of the control. 3) There is a tendency of lowering in wandering velocity as compared with that of the control. From these the author would conclude that the blocking of parasympathetic nerves brings about the lowering of the functions leucopoiesis in the marrow parenchyma.