TY - RPRT TI - Group II introns deleted for multiple substructures retain self-splicing activity. AU - J L Koch AU - S C Boulanger AU - S D Dib-Hajj AU - S K Hebbar AU - P S Perlman PY - 1992 DO - 10.1128/mcb.12.5.1950-1958.1992 UR - https://pubmed.ncbi.nlm.nih.gov/1569932/ ID - 1569932 ER -