active citizenship
active comparator
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active continental margin
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active drug

active efflux
active elements
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active females
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active galactic nuclei
active galaxies
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active growth
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active hydrogen
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active individuals
active infection
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active inflammatory lesions
active ingredient
active intermediate
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active labour market policies
active labour market programmes
active layer
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active learning experiences
active lesions
active life

active lifestyle
active ligands
active lipid mediator
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active lupus nephritis
active males
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active molecules
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active nanoparticles
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active ones
active only
active oxygen species