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. 2015 Jun 30;5:10565. doi: 10.1038/srep10565

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Comparison of honey bee males in different age groups that were either fed with spores of Nosema apis (Infected), or sugar syrup (Control): A) Percentage of drone survival per cage, numbers in bars refer to the number of cages used for each age group (20-30 bees per cage) B) Percentage of sperm viability per ejaculate. Numbers within bars indicate the number of drones used for each age group.