{'fraction_non_alphanumeric': 0.024226110363391656, 'fraction_numerical': 0.008075370121130552, 'mean_word_length': 5.469565217391304, '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}}
In vivo growth and differentiation potential of tracheal basal cells of rabbits in vitamin A deficiency

The growth and differentiation potential of rabbit tracheal basal cells were investigated in vitamin A deficient mice. Denuded rat tracheal grafts were xenotransplanted into nude mice made vitamin A deficient by feeding them retinol‐free pellets from mid‐gestation. Rabbit tracheal epithelial cells harvested enzymatically or cells derived from a basal‐cell‐rich fraction obtained by elutriation (purity 93.3%) had previously been inoculated into the grafts (n = 8, each). The grafts were implanted into the vitamin A deficient or control mice aged about 10 weeks. Four weeks later, the grafts were retrieved for histological examination.