• normal
  • In a particularly advantageous embodiment, the cells of the preparation are human embryonic stem cells, have normal karyotypes, and continue to proliferate in an undifferentiated state after continuous culture for eleven months. (google.es)
  • Among these hurdles is the aggressive local invasion of malignant cells from the original tumor into surrounding normal brain tissue, which makes complete surgical resection impossible. (mdpi.com)
  • types
  • For example, a hematopoietic stem cell may give rise to any of the different types of terminally differentiated blood cells. (google.es)
  • Glioblastomas (GBMs) are one of the most common and lethal types of primary central nervous system tumors, as their biological features make successful treatment very difficult. (mdpi.com)
  • ability
  • The embryonic stem cell lines also retain the ability, throughout the culture, to form trophoblast and to differentiate into all tissues derived from all three embryonic germ layers (endoderm, mesoderm and ectoderm). (google.es)