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Immune activation reduces sperm quality in the great tit.
Losdat S, Richner H, Blount JD, Helfenstein F. Losdat S, et al. Among authors: helfenstein f. PLoS One. 2011;6(7):e22221. doi: 10.1371/journal.pone.0022221. Epub 2011 Jul 12. PLoS One. 2011. PMID: 21765955 Free PMC article.
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