passages.id: split_7_validation_1651_passage
passages.type: progene_text
passages.text: When selective N-to-Q substitution was introduced at one or more of the five N - linked glycosylation sites within apoB-37 ( N(158) , N(956) , N(1341) , N(1350) , and N(1496)) , secretion efficiency of apoB-37 from transiently transfected cells was variably affected .