Volume 9 No. 1 January – February, 2004 ROMANIAN BIOTECHNOLOGICAL LETTERS – an international journal – CONTENTS 1.ANA-MARIA HOSSU, V. MAGEARUDetermination of vitamin C in pharmaceutical products with physico-chemical and bioanalytical technics ……………14972.D. FOLOGEA, TATIANA VASSU, ILEANA STOICA, ORTANSA CSUTAK, ELENA SASARMAN, DIANA SMARANDACHE, ROBERTINA IONESCUEfficient electrotransformation of yeast using bipolar electric pulses ……………1505 3.VERONICA STOIAN, NICOLETA CONSTANTIN, NICOLETA NITOIThe Involvement of the MROS2 gene in Floral Development at Silene latifolia ssp. Alba ……………15114.E. CONDAC, S. E. GEORGESCU, A. DINISCHIOTU, D.IORDACHESCU, M. COSTACHEA Non-Radioactive FPLC Method for Measuring Steroid 5α-Reductase Activity in Cultured Cells ……………15175.OANA MIRONAS, C. POHRIB, RODICA MATEESCU, ELENA BOCA, STEFANA JURCOANEThe inhibitor effect of some vegetal extracts on the fungal strains of the Alternaria sp. and Fusarium sp. ……………15236.VERONICA STOIAN, A. RODEWALD, GEORGETA CARDOS, ALEXANDRA COMSAA study of mtDNA from human fossils dating from the Bronze Age found in Romania …………… 15337.TATIANA VASSU, D. FOLOGEA, ORTANSA CSUTAK, DIANA SMARANDACHE, ELENA SASARMAN, ILEANA STOICA, SIMONA SOARESecondary Effects of Electroporation with bipolar electric pulses: Electrostimulation ……………15418.LAURA-DORINA DINU, ARINA-OANA ANTOCEApplication of Microcalorimetry to the Screening of Halotolerant Yeast Strains ……………15459.ZORICA-ILEANA HERTZOG, R. HERTZOG, MIRELA PREDANumerical chromosomal abnormalities in family with axenfeld-rieger syndrome ……………155310.List of Bibliographical Abbreviations ……………156111.Instructions for Authors ……………156712.Diary of Events ……………157713.In Memoriam ……………1578 Cover: The Bucharest University Building