• disease
  • Thus, the functions of those genes cannot be studied to the full extent, and their roles in human biology and disease cannot be established through knockout approaches in animals. (britannica.com)
  • early
  • After a few days, the cells are injected into early mouse embryos, which subsequently are implanted into the uterus of a surrogate female, where they eventually develop and are carried to term. (britannica.com)
  • cell
  • Artificial DNA sequences typically are introduced into mouse ES cells using a retrovirus or other viral vector, and the modified ES cells are then grown in cell cultures . (britannica.com)