RT Journal Article SR Electronic T1 -glucuronidase activity in fibroblasts cultured from persons with and without cystic fibrosis. JF Journal of Medical Genetics JO J Med Genet FD BMJ Publishing Group Ltd SP 441 OP 443 DO 10.1136/jmg.8.4.441 VO 8 IS 4 A1 S B Russell A1 J D Russell A1 J W Littlefield YR 1971 UL http://jmg.bmj.com/content/8/4/441.abstract AB