In addition, few data exist for West Africa, and few studies have tracked changes over time, using repeat sampling.
Few reports have tracked changes in the levels of acceptance of evolution among high school students, and there have apparently been no studies exploring the levels of acceptance of evolution among gifted high school students in transition to post-secondary education.
A number of studies have tracked changes in Leishmania parasite load in both susceptible and resistant murine models by monitoring changes in parasite numbers or by following transgenic parasites lines expressing luciferase or fluorescent reporter proteins.
No previous studies have tracked changes in performance on behavioural impulsivity tasks in relation to alcohol involvement over such an extended period of time, and we believe that the current study makes a very important contribution in this regard.
Previous live imaging studies of retinal GFP+ microglia and macrophages have tracked changes in cell numbers in response to acute optic nerve injury (Eter et al., 2008; Liu et al., 2012).
Since 1960, what I call the index of leading cultural indicators has tracked depressing changes in American society, from a rise in family breakdowns to a decline in civic participation.
Ms. Povoledo has reported on migration since refugees and economic migrants first began coming to Italy in substantial numbers in the early 1990s, and has tracked social changes as Italy's once-booming economy sputtered nearly to a standstill.
"Some of these big companies go out of their way to hide their ties to the organic labels," said Phil Howard, an associate professor at Michigan State University, who has tracked the changes, and provided them to the Post.
The online encyclopedia, where pages are edited and created by readers, has tracked the changes made by a user called "Contribsx" who has systematically removed embarrassing references on Shapps' Wikipedia page about the Tory chairman's business activities as Michael Green, the self-styled millionaire web marketer.
