. "Endonucleolytic cleavage within ITS2 between the 5.8S rRNA and the LSU-rRNA of an rRNA molecule originally produced as a tricistronic rRNA transcript that contained the Small SubUnit (SSU) rRNA, the 5.8S rRNA, and the Large SubUnit (LSU) rRNA, in that order, from 5' to 3' along the primary transcript." . . . . "cleavage in ITS2 between 5.8S rRNA and LSU-rRNA of tricistronic rRNA transcript (SSU-rRNA, 5.8S rRNA, LSU-rRNA)" . "cleavage at C2" . "cleavage in ITS2 of tricistronic rRNA transcript to separate 5.8S and LSU rRNAs (SSU-rRNA, 5.8S rRNA, LSU-rRNA)" . . . .