{'fraction_non_alphanumeric': 0.024363233665559248, 'fraction_numerical': 0.0033222591362126247, 'mean_word_length': 5.503597122302159, '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}}
The role of cyclic AMP in the cytolytic activity of lymphocytes.


 The cytolytic activity of lymphocyte populations toward cells bearing antigenic determinants against which the lymphocytes are specifically sensitized has received increasing attention recently, principally on account of the relevancy of this phenomenon to allograft immunity. Although it is established that such cytolysis is immunologically specific (1) and requires intimate contact between the “sensitized” lymphocytes and the antigen-bearing (or “target”) cell (2), presumably via the intermediary of a specific antigenic recognition unit on the lymphoid cell surface, little is known of the mechanisms by which the cytolytic event is effected. One suggestion (3) has been that the interaction between the lymphoid and target cells leads to the release of a soluble factor, termed lymphotoxin, which is the mediator of cell lysis.