Evolution within groups of tumor cells follows the principles of natural selection, as evolution in pathogenic microbes. That is, the
Spontaneous cell fusions amplify genetic diversity within tumors
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Conservative therapy for spontaneous pneumothorax seems noninferior
(HealthDay)—Conservative management with initial observation may be noninferior to immediate interventional management for carefully selected patients with primary spontaneous pneumothorax,
Quadrivalent HPV vaccine not tied to spontaneous abortion
(HealthDay)—The quadrivalent human papillomavirus vaccine (4vHPV) is not associated with an increased risk of spontaneous abortion when inadvertently given before