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Cleavers, Galium aparine. It is an annual plant of the family Rubiaceae. Photo taken in Ciudad Real province, Spain
High-resolution 3D, MIP, invert CT angiography image showing complete arterial anatomy of the neck and brain. Includes carotid branches, vertebral arteries, basilar artery, and full Circle of Willis.
Skyscrapers in the City of London.
Killer whale seamless pattern animal background
Cerebral aneurysm

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