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Angioplasty. One form is called balloon angioplasty, shown here. A balloon catheter is threaded into
Diphtheria. The bacteria that cause this disease, called Corynebacterium diphtheriae, proliferate in
True-color image of layers of haze in Titan's atmosphere.
Border Collie
Five layers or sheaths called koshas in Ayurvedic philosophy.
The nucleus is bounded by a double membrane called the nuclear envelope