The transcriptional promoter sequences for the Rhizobium meliloti
nitrogen fixation genes nifA and nifB were cloned to a β-galactosidase gene
fusion plasmid vector and transferred by homologous recombination to a
spec ...
Disseminated neoplasia (DN) is a proliferative cell disorder that occurs in the
circulatory system of bivalves. The condition is progressive and lethal. At least 15
species of bivalves over a wide range of geographic l ...
Some positive-strand RNA plant viruses possess a transfer RNA-like structure
(TLS) at the 3'-terminus of their genomic RNAs. The closest mimicry to tRNA is
exhibited by the valylatable TLSs from tymoviruses and furo-li ...