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Reindeer antlers grow again each year under a layer of fur called velvet. This reindeer is losing th
Platycnemididae are a family of damselfly called white-legged damselflies.
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
Luna Park at Coney Island was a vast living theater in which strollers were both spectators and acto
Tai chi walk along straight line. From tai chi stance, shift weight to the back leg and turn the ...