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Glioma. (a) Illustration of a large glioma (colored area) within the left cerebral hemisphere in a s
Charles Darwin may be dead and gone but a recent write-in campaign has pitted him against Republican
Electrocardiography. (a) Electrodes are placed on the patient’s chest to record the electrical event
Photograph of the flea that transmits Yersinia pestis to cause bubonic plague, called the oriental r
Cystic fibrosis is caused by a mutation in a protein called CFTR
A thin cleft, called the synapse, separates one cell from another.