You may want to identify certain types of equipment by vendor name and brand or category (., ultracentrifuge vs. prep centrifuge), particularly if they are not commonly found in most labs. It is appropriate to report, parenthetically, the source (vendor) and catalog number for reagents used, ., " ....poly-L-lysine (Sigma #1309) ." When using a method described in another published source, you can save time and words by providing the relevant citation to the source. Always make sure to describe any modifications you have made of a standard or published method.
1. Open web sources (somebody's home page, as opposed to peer-reviewed online journals or licensed database sites that provide access to scholarly works) are not usually considered reliable sources for academic research and should be used sparingly, if at all, and only after careful research into the sponsors of a site. In other words, don't use generally available internet search engines for your literature review.
2. Place each work in the context of its contribution to the understanding of the subject under review
3. Describe the relationship of each work to the others under consideration
4. Identify new ways to interpret, and shed light on, any gaps in previous research
5. Resolve conflicts among seemingly contradictory previous studies
6. Identify areas of prior scholarship to prevent duplication of effort
7. Point the way forward for further research
8. Place one's original work (in the case of theses or dissertations) in the context of existing literature--remember, however, that a literature review does not present new primary scholarship.
9. Always use WhiteSmoke English grammar software to check your grammar.