ELECTRON MICROSCOPIC OBSERVATIONS ON THE BLOOD OF THE HORSE I : NEUTROPHILS IN THE PERIPHERAL BLOOD OF THE CLINICALLY HEALTHY HORSES

概要

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The fine structures of sectioned neutrophils of the peripheral blood obtained from the clinically healthy horses were examined with an electron microscope and the findings were discussed comparing with those of the human neutrophils as reported by many workers. The results thus obtained are summarized as follows. 1) The nuclear lobes of the cells showed clear maculous appearance with two parts of more or less density according to the amount of the chromatin condensation. 2) The connecting substance between nuclear lobes seemed to be a considerable wide membranous one about 60mμ in thickness and not the one like a string. 3) The shapes of the specific granules were thought to be rod-like in the great number of them and they were 0.5〜0.6μ long by 0.05〜0.2μ in size. 4) In the cytoplasm, few mitochondria similar to or slightly larger than the specific granules in size were identified. 5) The ill-developed Golgi apparatus and the centrioles were observed rarely in the cut planes of the cells. 6) A few round or ovoid vacuoles of various size disseminated throughout the cytoplasm seemed to be the endoplasmic reticulum 7) Three kinds of large spherical or round bodies which were presumed to phagosome, lysosome or cytolysome were observed in the cytoplasm of some neutrophils.
北海道大学の論文