Assertion: cystic fibrosis's level | /r/HasProperty | more cftr
Facets:
Source sentences:
text: Because CFTR protein missing exon 9 is non functional and exon-9 splicing is inversely proportional to the length of the thymidine sequences, the 9T variant allows normal splicing while the 5T variant is associated with the highest level of non-functional CFTR (e.g. more CFTR missing exon 9)