RT Journal Article SR Electronic T1 The Need for a Collaborative Effort to Develop a Common, Rapid, Automated Assay for Natural and Recombinant Interferons JF PDA Journal of Pharmaceutical Science and Technology JO PDA J Pharm Sci Technol FD Parenteral Drug Association (PDA) SP 2 OP 2 VO 41 IS 1 YR 1987 UL http://journal.pda.org/content/41/1/2.abstract AB