{'fraction_non_alphanumeric': 0.011608623548922056, 'fraction_numerical': 0.02155887230514096, 'mean_word_length': 4.206896551724138, '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}}
Immunological observations on the relationship of SP 1 alpha to SP 1 beta.

SP 1 alpha and SP 1 beta in pregnancy sera were separated by gel chromatography. When these proteins were subjected to crossed immunoelectrophoresis with an antiserum to non-pregnant human serum in the first dimension gel, SP 1 alpha was absorbed but SP 1 beta was unaffected. Similarly incubation with such an antiserum caused the precipitation of SP 1 alpha but not SP 1 beta. When SP 1 antiserum was absorbed with either SP 1 alpha or SP 1 beta it resulted in the removal of all antibodies to either SP 1 alpha or SP 1 beta.