{'fraction_non_alphanumeric': 0.03625954198473282, 'fraction_numerical': 0.022900763358778626, 'mean_word_length': 4.994285714285715, '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}}
[Various clusters of immunoreactivity in the aged and their relation to HLA antigens and erythrocyte antigens].

In blood samples of members of the Berliner Altersstudie (BASE) (n = 427, 204 males, 223 females; mean = 85.2 years, range = 76-96 years, SD = 3.3 years), red cell, HLA-A, -B, -Cw and -Dr antigens were determined by standard methods. Lymphocyte reactivity was measured by 3H-thymidine uptake into DNA of lymphoblastic cells stimulated by 12 different mitogens and antigens. Cluster analysis, confirmed by t and F tests, defined 3 distinct clusters of lymphocyte reactivity. Clusters showed significantly different cumulations of 3 or more increased characteristic red cell and HLA antigens, and trends toward a decreased overall immunoresponsiveness in elder people. Like in middle-aged individuals, immunoresponsiveness in elder individuals can be dissected into at least 3 functionally different clusters which are not influenced by lymphocyte subsets or in vivo cell activation but by the patterns of both red cell and HLA antigens.