Health A-Z


Clinical Definition Zinc is a naturally occurring element and an essential nutrient in cellular metabolism, specifically for the immune system, the reproductive system and other neurological functions. In Our Own Words Zinc is an essential trace mineral found in every cell in the body. Zinc supports the immune system and also helps the body produce

Zoster Virus

Clinical Definition Zoster virus, or Varicella-zoster virus, is a virus that causes varicella and herpes zoster, which are better known as chicken pox and shingles. In Our Own Words Zoster virus, also known Varicella-zoster virus, is a highly infectious virus and the cause of chicken pox and shingles. Once you’ve had chicken pox, the zoster virus


Clinical Definition A zygote is the union of a sperm and egg cell. It contains all the genetic information needed to form a human being, with half of the information originating from the egg and half from the sperm. The zygote travels down the fallopian tube and divides to become a blastocyst and eventually an

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