Subjects: TWINS; AGING; ZYGOTES
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Subjects: ORAL hygiene; GENETICS; MOLARSTURKEY
Subjects: TWINS; READING; LEARNINGUNITED Kingdom
Subjects: *BREAST cancer; *TWINS; *INFANT boysDENMARK; FINLAND; SWEDEN
Subjects: RESEARCH; ALZHEIMER'S disease; NERVE tissue proteins
Subjects: SMOKING; CIGARETTE smoke; TEACHINA