{'fraction_non_alphanumeric': 0.012626262626262626, 'fraction_numerical': 0.0, 'mean_word_length': 4.925373134328358, '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}}
Molecular biology of aging.

Aging seems to reflect a patterned program of decline in functional reserves and a reduced ability to maintain homeostasis. Advances in molecular biology have provided new insights into the process of aging at the cellular level. In this review, a few selected models of aging that illustrate the molecular methods and techniques used in aging research are discussed.