secondary ultrastructural changes were detected in nearly all children , consisting of cellular oedema , swelling of mitochondria , dilatation of the endoplasmatic reticulum , protrusion of cells and fusion of cilia , enlarged intercellular spaces , thickening of the epithelial basal membrane , increased number of goblet cells , microtubular abnormalities of the cilia , lesions of the apical cell membrane with loss of cilia and microvilli .
C0007634
cellular
C0026049
microvilli