TY - RPRT TI - Internal duplication in human alpha 1 and beta 1 interferons. AU - B W Erickson AU - L T May AU - P B Sehgal PY - 1984 DO - 10.1073/pnas.81.22.7171 UR - https://pubmed.ncbi.nlm.nih.gov/6594689/ ID - 6594689 ER -