{'fraction_non_alphanumeric': 0.019543973941368076, 'fraction_numerical': 0.0054288816503800215, 'mean_word_length': 5.633093525179856, 'pattern_counts': {'":': 0, '<': 0, '<?xml version=': 0, '>': 0, 'https://': 0, 'lorem ipsum': 0, 'www.': 0, 'xml': 0}, 'pii_count': 0, 'substrings_counts': 0, 'word_list_counts': {'cursed_substrings.json': 0, 'profanity_word_list.json': 0, 'sexual_word_list.json': 0, 'zh_pornsignals.json': 0}}
Glycoconjugate Receptors Involved in the Adhesion of Escherichia coli and Streptococcus pneumoniae to Epithelial Cells

This report will focus on two experimental systems where the biochemical basis for the attachment of bacteria to epithelial cells is fairly well understood: adhesion of pyelonephritogenic E. coli to human urinary tract epithelial cells1 and of S. pneumoniae to human pharyngeal epithelial cells2. In both systems, the bacterial surface component involved in adherence, the adhesin, is a protein, and the complementary structure on the epithelial cell, the receptor, is the oligosaccharide portion of a glycolipid.3'4 Both interactions show a high degree of specificity. The same bacteria may, however, interact with other cell receptors or mucosal components.1 The usefulness of understanding mechanisms of bacterial adhesion depends on how crucial the adherence process is for colonization/infection.