Find articles on DNA that were authored by Ostell in 2000:
dna[MeSH Terms] AND ostell[au] AND 2000[pubdate]
Find articles on the effects of heat or humidity on multiple sclerosis:
(heat OR humidity) AND multiple sclerosis
Find articles about arthritis excluding author manuscripts:
arthritis NOT author manuscript[filter]
common cold AND (vitamin c OR zinc)

From: PMC Help

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