passages.id: split_7_validation_1688_passage
passages.type: progene_text
passages.text: Interestingly , NPSC and iPS expressed mRNA of complement regulatory proteins ( CRP ) such as membrane cofactor protein ( CD46 ) , decay accelerating factor ( DAF or CD55 ) , and protectin ( CD59 ) , but CD59 mRNA expression was negligible in iPS .