(a) Agarose gel electrophoresis of the amplification product for vitronectin cDNA from bronchial brushings.

<p>The amplified fragment corresponds to a band size of 151bp. MW, molecular weight marker, Bb, bronchial brushing, and NC, negative control or “non-template control” of qPCR. The number accompanying bronchial brushings corresponds to the number assigned to different patients. <b>(b) Agarose gel electrophoresis of the amplification product for vitronectin cDNA from cultured cells</b>. Molecular weight marker (MW), normal human bronchial epithelial cells (NHBE), cells from adenocarcinoma of epithelial origin (NCL-H23), bronchial brushing (Bb), extraction and retro-transcription control (RT control) or “no reverse-transcriptase control”, and negative control (NC).