{'fraction_non_alphanumeric': 0.02242152466367713, 'fraction_numerical': 0.002242152466367713, 'mean_word_length': 5.478260869565218, '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}}
Studies on cholera toxin and antitoxin.

SUMMARY: The preparation, purification and properties of cholera toxin type 2 are described. When the toxin was given to experimental animals it induced a high level of toxin-neutralizing antibodies. Cholera toxoid given to human volunteers induced antibodies consisting of agglutinins, vibriocidal and toxin-neutralizing antibodies. The relevant titres depended on the purity of the antigen administered.