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The life cycle of Plagiorhynchus cylindraceus, an intestinal parasite of birds.
Reindeer standing on snow to avoid blood-sucking insects.
Ford spring-lock connectors require a special tool for disassembly.
Growth and quality of life
Loss of brain cells in a transgenic Huntington-disease mouse. (a) Section of normal mouse-brain stri
Oxidative stress can begin in childhood and lead to progressive damage throughout life