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Archaeal multicellular structures. M. mazei S-6 packets (A) and lamina (B) are displayed, along with the single-cell morphotype (C) for comparison (197). The diameter of the single cells is ∼3 μm, and the magnification factor is the same for the three panels. The photographs were taken with phase-contrast optics of wet samples from live cultures between the glass slide and coverslip (180a).
