RT Journal Article SR Electronic T1 Decoding hormones for a stem cell niche JF Science JO Science FD American Association for the Advancement of Science SP 250 OP 250 DO 10.1126/science.aan1506 VO 356 IS 6335 A1 Robertson, Claire YR 2017 UL http://science.sciencemag.org/content/356/6335/250.abstract