background and objectives: the development of molecular biological techniques provide a method for direct detection and identification of pathogens. this study attempted to compare bacterial culture and pcr to detect s. agalactiae in cattle milk samples. the pcr method was based on using primers v1 and v2 derived from the 16s rrna gene. materials and methods: one hundred milk samples were colle...

BACKGROUND Substantial progress has been made in nutritional epigenetics, but little is known regarding whether mitochondrial DNA (mtDNA) methylation is involved in this process. OBJECTIVE The objective of this study was to determine whether dietary lipid sources [various fatty acids (FAs)] modify mtDNA methylation. METHODS A total of 600 large yellow croakers (Larimichthys crocea) with an ...

The mitochondrial DNA mutation m.1555A>G predisposes to hearing loss following aminoglycoside antibiotic exposure in an idiosyncratic dose-independent manner. However, it may also cause maternally inherited hearing loss in the absence of aminoglycoside exposure or any other clinical features (non-syndromic hearing loss). Although m.1555A>G was identified as a cause of deafness more than twenty ...

Metasarcidae Kury, 1994 (Gonyleptoidea) is exclusively distributed in the Andean region of South America, from northern Peru to southern Bolivia. This contribution reviews family using traditional taxonomy and cladistics. The cladistic analysis based on total evidence (TE), maximum likelihood (ML) direct optimization molecular morphological characters. data matrix composed DNA sequences three m...

The 16,260-bp mitochondrial DNA (mtDNA) from the starfish Asterina pectinifera has been sequenced. The genes for 13 proteins, two rRNAs and 22 tRNAs are organized in an extremely economical fashion, similar to those of other animal mtDNAs, with some of the genes overlapping each other. The gene organization is the same as that for another echinoderm, sea urchin, except for the inversion of a 4....