Oyster Ciliary Inhibition by Cystic Fibrosis Factor

Abstract
Ciliary inhibition in oysters serves as an assay in identifying a serum factor in cystic fibrosis patients and heterozygotes. Serums from 47 patients with cystic fibrosis and 19 heterozygotes caused ciliary cessation within 35 minutes, whereas serums from only 2 of 64 individuals without cystic fibrosis inhibited ciliary activity within this time.