Abstract:Hamster trachea epithelial (HTE) cells were shown to respond to 20% cystic fibrosis serum (CFS) by secreting twice as much protein as in the presence of 20% normal human serum (NHS). Serum from obligate heterozygotes (HHS) produced an intermediate effect. A peak of Ca2+ entry into the HTE cells occurred about 30 min after exposure to 20% CFS, followed by a slow decline to basal levels. In contrast, 20% NHS did not cause an influx of Ca2+ and HHS produced an influx to about half that of CFS. Increasing concentr… Show more
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