R ver 1.7, annotate devel ver, rgu34a ver 1.2.1: >xx<-ls(env=rgu34aPMID) > get(xx[1000], envir=rgu34aPMID) [1] NA or for that sake: > get("AJ006070_at", envir=rgu34aPMID) [1] NA Why is that..? Thanks! Knud [[alternate HTML version deleted]]