Regardless, at that time he was one of the two or three persons in the world who clearly understood the importance of siderophores and the role of iron in the outcome of many biological interactions, especially the host-parasite competition that can cause human and animal diseases. His modest demeanor did not adequately reflect his powerful scientific knowledge. Still, he was easily approachable by those who asked and received his thoughtful advice. He was an excellent reader and a creative scientist. His impact on bacteriology is well known here, but it extended well beyond The University of Texas campus.
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