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Genes & Cells

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Lipizzan horse

DADDY ISSUE  Genetic analysis of Y chromosomes from modern stallions, such as this Lipizzan horse named Conversano Sessana, helped scientists trace the sires of all modern stallions back 700 years to Arabian and Turkoman stallions.

flu virus

FLU REVIEW  Observing mutations that tweak proteins on the surface of the flu virus (3-D representation, shown) in people with long-term infections may give researchers a preview of how the virus will morph as it spreads globally years later.

vesicle in the bacterium Halothiobacillus neapolitanus

UNDER THE SKIN  Researchers have discovered mysterious structures, such as these bubblelike compartments called vesicles that sit between the cell membrane (cyan) and the cell wall (purple) of the bacterium Halothiobacillus neapolitanus (cryotomogram, top;  3-D reconstruction, bottom).

Genes & Cells

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