Also found in: Medical.
plus strand[′pləs ‚strand]
(cell and molecular biology)
A parental ribonucleic acid (RNA) strand in RNA bacteriophages that is used as a template for a complementary RNA strand (minus strand) produced with the formation of a double-stranded (double-helix) RNA.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.