共查询到20条相似文献,搜索用时 15 毫秒
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C. de Martino F. de Luca F. Minio Paluello G. Tonietti L. Orci 《Cellular and molecular life sciences : CMLS》1963,19(12):639-641
Riassunto Sezioni di pineale di ratto impubere e adulto sono state esaminate al microscopio a contrasto di fase ed al microscopio ottico dopo colorazione secondo la tecnica diJones. Gli autori confermano l'esistenza di una attività secretoria che aumenta con l'età e prospettano la possibilità che nel secreto siano contenute serotonina e melatonina. 相似文献
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Résumé La glande pinéale du rat blanc est étudiée ici au microscope électronique. L'association observée entre les vésicules agranulaires et les «blebs» de la membrane nucléaire est un argument en faveur de la théorie selon laquelle l'origine du reticulum endoplasmique est à rechercher dans la membrane nucléaire. 相似文献
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Zusammenfassung Es werden die Granulationen von Leukozyten, welche im Dünndarm der Ratte infolge einer Helmintiasis auftraten, mit den Granulationen der Mastzellen im s.c. Gewebe verglichen. Die Granulationen in den Mastzellen verhalten sich gegenüber Heparin und Histamin positiv, während die Leukozyten eine negative Reaktion ergeben. Dies weist darauf hin, dass die beiden Zellen nicht identisch sind und wohl aus verschiedener Matrix stammen. 相似文献
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Relationship of specific granules to the natriuretic and diuretic activity of rat atria 总被引:11,自引:0,他引:11
R. Garcia M. Cantin G. Thibault H. Ong J. Genest 《Cellular and molecular life sciences : CMLS》1982,38(9):1071-1073
Summary The isolation of several fractions from rat atrial homogenates, by the use of differential and sucrose gradient centrifugation, indicates that the diuretic and natriuretic activity is restricted to the fractions rich in specific granules. Our preliminary results suggest that the active substance is a small peptide which is probably different from the natriuretic substance(s) already known.Supported by a group grant given by the Medical Research Council of Canada to the Multidisciplinary Research Group on Hypertension of the Clinical Research Institute of Montreal.Acknowledgments. The authors thank Suzanne Diebold for technical assistance. 相似文献
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Summary Giant melanosomes, ellipsoidal (1.5 m×1.3 m) or spherica (1.1 m–1.4 m in diameter) exist in the scrotal skin of the black pelted Long Evans rat. They are longer and wider than normal stage IV melanosomes (0.7 ×0.4 m) found in theses dermal melanocytes.The authors acknowledge with gratitude, the technical assistance of Evelyn Ann Flynn. This work was supported by grant AM 20669-16 from the National Institute of Arthritis, Metabolism, and Digestive Diseases, USPHS. 相似文献
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G Kelényi 《Experientia》1972,28(9):1094-1096
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Summary In addition to the already known acid phosphatase and -glucuronidase, 2 other lysosomal enzymes: aryl sulphatase and N-acetyl--glucosaminidase were localized by histochemical methods in the renin-containing granules of the mouse juxtaglomerular cells. 相似文献
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E. M. Acton H. Stone M. A. Leaffer S. M. Oliver 《Cellular and molecular life sciences : CMLS》1970,26(5):473-474
Riassunto Viene confermato che la struttura dell'agente dolcificante perillartina è quella di unasim ossima. Il tentativo di ottenere l'isomeroanti per azione dell'acido cloridrico ha condotto invece all'addotto tra HCl e gruppo isopropenilico, mentre il trattamento con trifluoruro di boro ha provocato solo la migrazione del doppio legame per formare l'analogo derivato dell'1, 3-cicloesadiene. 相似文献
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H. Lagercrantz B. Kuylenstierna L. Stjärne 《Cellular and molecular life sciences : CMLS》1970,26(5):479-480
Résumé Les granules chromaffines contiennent de fortes quantités de nucléotides (ATP). L'origine de cet ATP est inconnue, mais il a été admis implicitement que la réaction ADPATP+AMP est catalysée par l'enzyme adénylate kinase. Nous avons recherché la présence de cet enzyme dans des granules isolés en gradient de densité de sucrose. 相似文献
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I. K. Takeuchi Y. K. Takeuchi T. Kajishima 《Cellular and molecular life sciences : CMLS》1978,34(8):1066-1067
Summary Pigment granules in choroidal melanophores of the albino goldfish contained fine particulate materials which were in various degrees aggregated in clumps. Tyrosinase was considered to be present in an inhibited state in these pigment granules.Supported by the Ministry of Education of Japan Research grant No. 234046. 相似文献