{'fraction_non_alphanumeric': 0.022774327122153208, 'fraction_numerical': 0.002070393374741201, 'mean_word_length': 5.05, '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}}
“Epithelial” foci of presumptive neural origin in cultures of normal mouse colon

Patches of cells, which at the light-microscope level appear to be epithelial, persist for several months in cultures of normal mouse colon. Ultrastructural studies showed that these cells were nerve-associated and were probably derived from the Schwann cell-satellite cell group. True epithelial cells all died out within the first 2 wk of culture, and epithelial cell lines could not be established.