Cilia: 'The bouncer' of bacteria

The squid's internal light organ features several different populations of cilia (green/blue) that coordinate their beating activity to recruit symbiont bacteria from the seawater and facilitate their migration to the pores (right side), where they enter the organ for life-long colonization. Credit: Lab of Margaret McFall-Ngai, Pacific Biosciences Research Center at the University of Hawaii

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