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Figure 2–55. Cell wall of the sea alga Valonia (After Steward and Mühlethaler, 1953). a — primary wall, with disperse texture; b — secondary wall, with crossed parallel texture.
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Figure 2–55. Cell wall of the sea alga Valonia (After Steward and Mühlethaler, 1953). a — primary wall, with disperse texture; b — secondary wall, with crossed parallel texture.