生物方面的文献翻译，求助大神帮忙，要求语句通顺即可。

生物方面的文献翻译，求助大神帮忙，要求语句通顺即可。
Genetic diversity among microorganisms has been widely studied by PCR-based techniques, which have opened avenues for the development of new and inventive molecular typing methods . Genotypic relationships among microorganisms have been determined by analyzing the genomic DNA with PCR-based methods . Repetitive sequence-based PCR (Rep-PCR) has been used successfully to generate DNA fingerprints to distinguish between genetically unrelated isolates and closely related bacterial strains . It involves the use of primers based on the short repetitive elements derived from highly conserved palindromic inverted repeat regions dispersed throughout the prokaryotic kingdom . Amplification of the regions between adjacent repetitive extragenic elements gives strain-specific DNA fingerprints . Primer sets based on the repetitive elements present in the bacterial genome, ERIC (enterobacterial repetitive intergenic consensus),REP (repetitive extragenic palindromes), and BOX, yield genomic fingerprints specific to pathovars and strains of gramnegative bacteria . The inter-REP and inter-ERIC profiles are specific for bacterial strains within a species .