The phrase "certain lipids" refers to specific types of fats found in our bodies. These particular lipids have some significance or importance in a particular context or situation. Full definition
Studies by Pekka Lappalainen laboratory at Institute of Biotechnology, University of Helsinki, Finland, now reveal that BAR domain proteins not only bend membranes, but also generate extremely stable lipid microdomains by inhibiting the lateral diffusion of certain lipids nearly completely. (sciencedaily.com)
Compared with levels in a control group, certain lipid metabolites were elevated in the transgenic mice, even though they appeared perfectly healthy. (scientificamerican.com)
While certain lipids, such as trans fats, are still known to be bad for us (and probably always will be), it's not a good idea to lump all fats together into one group, Tran said. (livescience.com)