Percentage of cells containing chalkbrood mummies (M) or pin killed brood (PB) that was uncapped or removed after 9 hours filming in hygienic (H) or non-hygienic (NH) colonies. H-M: Hygienic bees activities toward Mummies; H-PB: Hygienic bees toward Pin-killed Brood; NH-M: Non-Hygienic bees toward Mummies; NH-PB: Non-Hygienic bees toward Pin-killed Brood. n indicates the number of cells.