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flippydoodle:Irving Geis’ illustration of the hemoglobin tetramer. (Irving Geis Collection, Howard H
flippydoodle:Irving Geis’ illustration of the hemoglobin tetramer. (Irving Geis Collection, Howard H
medicalschool:SEM image of an embryo in the eye of a needle. (source)
medicalschool:SEM image of an embryo in the eye of a needle. (source)
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