{'fraction_non_alphanumeric': 0.032303370786516857, 'fraction_numerical': 0.014044943820224719, 'mean_word_length': 5.0423728813559325, '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}}
Characterization of cell populations used for studies of antibodies to I-region products.

Mononuclear cells from peripheral blood contained at least four different cell types: monocytes, T lymphocytes, B lymphocytes, and lymphocytes with Fc receptors. Monocytes represented 41% of B-cell-enriched preparations and gave rise to extra reactions due to monocyte antibodies in allo immune sera. Polyvalent anti-Ig stained 88% of B-enriched-cells. However, 58% of these cells had IgG bound to Fc receptors, and only 42% had surface Ig stable after brief incubation at 37 degrees C. Further studies are required to determine to what extent the antibodies reacting with such B-cell preparations are also heterogeneous.