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English: f0010: Babesia parasites in human erythrocytes. (a) B. divergens, (b) B. venatorum, (c) Babesia sp. MO1 from Kentucky, (d) B. microti, (e) B. duncani, (f) Babesia sp. KO1 from Korea. (1) Paired piriforms; (2) Tetrads; (3) Ring forms. The figure was reprinted with permission from Elsevier first published in Gray et al. (2010). The parasites shown in Fig. 2a, b, c, e, and f were assembled from original photographs, first published as follows: (a) Hunfeld et al., 2008; (b) Häselbarth et al., 2007; (c) Beattie et al., 2002; (e) Kjemtrup et al., 2002; (f) Kim et al., 2007.