TY - RPRT TI - Amplified ribosomal spacer sequence: structure and evolutionary origin. AU - R Kominami AU - M Muramatsu PY - 1987 DO - 10.1016/0022-2836(87)90639-5 UR - https://pubmed.ncbi.nlm.nih.gov/3473237/ ID - 3473237 ER -