挟恩不图报鳏寡Diagnosis of botulism in water birds 期刊名称： Veterinary Record
作者： Smith,G.,Oliphant,J.,Evans,E.麻辣血旺
年份： 1983年
期号： 第19期铁人电影
音乐裁剪摘要：We have recently shown that bimorph piezoelectric PVDF films induce formation of periosteal bone in vivo and attributed this phenomenon to a piezoelectric effect. In the prent study films were implanted in rabbits to encircle the femoral diaphysis. Specimens obtained after 6 and 12 days were subjected to routine processing for electron microscopy as well as fixation using the Ka-pyroantimonate technique. The electron micrographs revealed that initial osteoblastic differentiation and formation of collagenous matrix were followed by Ca accumulation in mitochondria. Calcification of the matrix progresd with deposition of mineralizing nodules and their fusion to form larger calcified mass. This was associated with disappearance of the pyroantimonate positive material from mitochondria. The ultrastructural obrvations
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