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Xen- (prefix): Referring to something foreign or different. For instance: Xenoantigen - An antigen present in multiple species. Xenograft - A surgical procedure involving tissue transplanted from one species to another, dissimilar species, genus, or family. Xenotransplantation - The process of transplanting organs or tissues from one species to another, such as the heart transplant from a baboon to Baby Fae in 1984 at Loma Linda University in California. Xenotropic virus - A virus capable of replicating in the cells of a species different from its usual host. The prefix "xen-" originates from Late Latin and Greek, derived from "xenos," which means stranger, guest, or host. Both xen- and xeno- are variations of the same prefix.
Our technology delivers immediate, actionable feedback that refines your skills in real time.
Understand how to safely and effectively operate an Automated External Defibrillator (AED) for adults, children, and infants.
Learn how to perform the Heimlich maneuver and clear airway obstructions caused by choking in both adults and infants.
Gain experience working as part of a team when more than one rescuer is available during an emergency.
Receive your AHA CPR Certification E-Card on the same day you complete the class and pass the exam.
CPR Certification Labs provides professional CPR and emergency training courses based on recognized industry standards.
