1,721,165 research outputs found

    ELECTRON-MICROSCOPIC LOCALIZATION OF F-ACTIN IN ACROSOME REACTED BOAR SPERMATOZOA BY MEANS OF A PHALLOIDIN-FITC COMPLEX

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    7. L. Castellani Ceresa, M. F. Brivio, G. Radaelli. Electron Microscopic Localization of F actin in Acrosome Reacted Boar Spermatozoa by Means of a Phalloidin FITC Complex. J. Submicrosc. Cytol. Phatol., 23, n°2, 347 349, 1991.An immunocytochemical study at the ultrastructural level has been performed in boar spermatozoa in order to clarify the aggregation state of actin before and after the acrosome reaction. A new phalloidin probe has been used to detect F-actin: a phalloidin derivative conjugated with FITC, followed by incubation with an anti-FITC antibody. The protein A-gold technique was then applied for the localization of the antigenic sites. Gold particles were localized on the sperm surface only after the acrosome reaction which was induced by the ionophore A23187

    R. Sacco, M. Guadagni, R. Aluffi Beck-Peccoz, L. Castellani (coll.), diritto africano

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    R. Sacco, M. Guadagni, R. Aluffi Beck-Peccoz, L. Castellani (coll.), diritto africano. In: Revue internationale de droit comparé. Vol. 49 N°3, Juillet-septembre 1997. pp. 752-755

    R. Sacco, M. Guadagni, R. Aluffi Beck-Peccoz, L. Castellani (coll.), diritto africano

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    R. Sacco, M. Guadagni, R. Aluffi Beck-Peccoz, L. Castellani (coll.), diritto africano. In: Revue internationale de droit comparé. Vol. 49 N°3, Juillet-septembre 1997. pp. 752-755

    The UNCITRAL Model Law on Electronic Transferable Records: Introduction and Overview

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    In 2017 UNCITRAL adopted the Model Law on Electronic Transferable Records (MLETR) to address issues relating to the use of transferable documents and instruments such as bills of lading, bills of exchange and promissory notes in electronic form. The article discusses the background and the main features of the Model Law with reference also to national legislation. In particular, it highlights the challenges posed by the transposition in the digital world of the incorporation of the right to delivery of goods or payment of a sum of money in the paper-based document and illustrates the solutions suggested in the Model Law. It also offers an overview of the status of the adoption worldwide in light of its endorsement by the G7 and of the references made to it in digital trade agreements
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