Postcard US-9771444
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Six cards! :o ♥
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Axolotl_ said:
posted 7 months ago
Left two: By Katy Wiedemann and Jennifer Z Paxton. Second to left: Types of bacteria (clockwise from top-left): Escherichia coli (E. coli), Trichinella spiralis, Bacillus and Coccus.
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