منابع مشابه
The lexA gene product represses its own promoter.
The products of the lexA and recA genes of Escherichia coli regulate the cellular response to DNA damage (the SOS response). Here we describe the cloning of the wild-type lexA gene and the identification of its 24,000-dalton protein product. We also describe construction, by recombination in vitro, of a phage that bears the lexA promoter fused to the lacZ gene. Experiments with this fusion phag...
متن کاملNatural Product Research: Formerly Natural Product Letters
New sesquiterpenoid derivatives from Solanum septemlobum with cytotoxicities Lei Zhang, Hai-Qing Lin, Gui-Sheng Li, Xi-Dian Yue & ShengJun Dai a School of Pharmaceutical Science, Yantai University, Yantai 264005, P.R. China b State Key Laboratory of Bioactive Substance and Function of Natural Medicines, Institute of Materia Medica, Chinese Academy of Medical Sciences & Peking Union Medical Coll...
متن کاملNatural Product Research: Formerly Natural Product Letters
Anthemis wiedemanniana essential oil prevents LPS-induced production of NO in RAW 264.7 macrophages and exerts antiproliferative and antibacterial activities in vitro Filomena Conforti a , Federica Menichini a , Carmen Formisano b , Daniela Rigano b , Felice Senatore b , Maurizio Bruno c , Sergio Rosselli c & Sezgin Çelik d a Department of Pharmaceutical Sciences , University of Calabria , via ...
متن کامل“The Mind Is Its Own Place”: Amelioration of Claustrophobia in Semantic Dementia
Phobias are among the few intensely fearful experiences we regularly have in our everyday lives, yet the brain basis of phobic responses remains incompletely understood. Here we describe the case of a 71-year-old patient with a typical clinicoanatomical syndrome of semantic dementia led by selective (predominantly right-sided) temporal lobe atrophy, who showed striking amelioration of previousl...
متن کاملIts Own Operators
The typical pattern-recognition program is either elaborately preprogrammed to process specific arrays of input patterns, or else it has been designed as a tabula rasa, with certain abilities to adjust its values, or "learn." The first type often cannot identify large classes of patterns that appear only trivially different to the human eye, but that would completely escape the machine's logic ...
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ژورنال
عنوان ژورنال: Pharmacognosy Research
سال: 2010
ISSN: 0974-8490
DOI: 10.4103/0974-8490.60574