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Cells

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petunias

SWEET SCENT  A protein called PhABCG1 moves scent compounds out of petunias’ cells, helping the flowers to smell sweet.

mouse skeleton x-ray

BONE UP  The skeleton doesn’t just protect important bodily organs, it also talks to them, studies in mice show.

Germline stem cells

EGG-CITING DEVELOPMENT  Germline stem cells (orange circles, left) implanted into a mouse’s ovary move to the edge of the ovary (middle) and begin developing into eggs. By day 6 (right) the cells began making a protein called STRA8 (pointed out with red arrow), one sign that they were starting to turn into eggs.

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