install devtools::install_github("ropensci/elife") library(elife) search and get keywords back elife_doi(dois=c("10.7554/eLife.00160","10.7554/eLife.00248","10.7554/eLife.01917","10.7554/eLife.02313","10.7554/eLife.02475"), ret="keywords") $`142fbd29-b41e-4c38-8328-597f77a5e659` [1] "CpG island methylator phenotype" "INK4-ARF" "colorectal cancer" [4] "ZNF304" "KRAS" "DNMT1" $`04da1702-87d6-41da-9067-39a055b529c8` [1] "TGN sorting" "Vesicle coat proteins" "Arf proteins" $`049ba124-5896-48b4-9e6a-8b4165a13c23` [1] "biosensor" "FRET" "fluorescence" "transport" "nitrate" "oligopeptide" $`93e65280-d3a6-4c2e-b0cf-fb5192cba83e` [1] "CpG island methylator phenotype" "INK4-ARF" "colorectal cancer" [4] "ZNF304" "KRAS" "DNMT1" $`3eeb9fd7-6efa-490c-b1c9-1153f64514de` [1] "confocal microscopy" "fluorescent probes" "GFP" "nanoscopy" "superresolution" [6] "live-cell imaging"