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Reindeer antlers grow again each year under a layer of fur called velvet. This reindeer is losing th
Photograph of the flea that transmits Yersinia pestis to cause bubonic plague, called the oriental r
Earth’s history is divided into nested sets of time--eons, eras, periods, and epochs--and is called
Children with disabilities used to be sent to special schools. In a process called mainstreaming or ...
The myeloma cells do not grow in a selective media called HAT because they cannot synthesize DNA ...
A thin cleft, called the synapse, separates one cell from another.