Volume 6 No. 6 November – December, 2001 ROMANIAN BIOTECHNOLOGICAL LETTERS – an international journal – CONTENTS 1.NATALIA CUCU Epigenomics: Unifying Genomics and Proteomics for an Efficient Functional Genomic Approach of the Current Genetic Analysis……………4532.V. ŞUNEL, CRISTINA BĂSU, C. ONISCU, G. DROCHIOIU Benzimidazole Derivatives with N-(m-Nitrobenzoyl)-L-Asparagic Acid and N-(m-Nitrobenzoyl)-L-Asparagine Residue with Potential Hypotensive Activity……………4693.ANGELA MĂRCULESCU, DANIELA HANGANU, OLAH NELI – KINGAQualitative and Quantitative Determination of the Caffeic Acid and Chlorogenic Acid from Three Chemovarieties of Chrysanthemum balsamita L……………4774.ANCA OANCEA, LUCIA MOLDOVAN, MARINELA FLĂMANZEANU, MIHAELA MATEESCU, FLORIN COJOCARUA New Boar Sperm Dilution Medium for Artificial Insemination Technology……………4855.DELIA-IRINA COROL, N. TOMA, I.I. DOROBANTU Spectral Analysis Used in the Determination of b-Carotene from Calendula Officinalis……………4936.DALILA SAMSON-BELEI, ELENA BÂCU, MIOARA ANDREI, MAGDA PETROVANU New hidrazides of the acrylic acid derived from phenothiazine……………5017.T. Ţolea, I. Gh. Tănase, Iulia Gabriela David, Mihaela Buleandră, G. L. RaduThe Influence of the Receptors Concentration in the Membrane on Its Sensitivity……………5078.M. CHIRIŢĂ, C. ONISCU, DANIELA M.VLAD, G.VEISAContributions at the Biomaterials Base Development. The Collagen Hydrolyse from Sheep Skin, for Biomedical Applications……………5119.Instructions to the Authors……………52110.List of Bibliographical Abbreviations……………52911.Diary of Events……………535 Cover: The Bucharest University Building