Chick embryos are a great historical research model in basic and applied sciences. Along with other animal models, avian and specifically chicken embryo has been attended, as well. Avian fertilized eggs as a natural bioreactor are an efficient tool for producing recombinant proteins and vaccines manufacturing. Due to the limitations of birds' eggs for viral replication, avian stem cells culture...

in the last century, neural stem cells are used in a lot of studies for basic and therapeutic investigations. several sources are identified for neural stem cells including embryonic, fetal and adult stem cells. although most of studies have focused in embryonic as well as fetal cells due to their capacity to generate progenies, these cells have some problems such as immunological, availability...

The tissue microenvironment directs stem/progenitor cell behavior. Cancer cells are also influenced by the microenvironment. It has been shown that, when placed into blastocysts, cancer cells respond to embryonic cues and differentiate according to the tissue type encountered during ontological development. Previously, we showed that the mouse mammary gland was capable of redirecting adult mous...

Human germ cell tumors are often metastatic, presumably due to distal site tumor growth by cancer stem cells. To determine whether cancer stem cells can be identified in a transplantation model of testicular germ cell tumor we transplanted murine embryonic germ cells (EGCs) into the testis of adult severe combined immunodeficient (SCID) mice. Transplantation resulted in a locally invasive solid...

regenerative capacity of mammals is limited and can rarely regenerate a specific organ or tissue fully. due to these limitations, regenerative medicine seeks efficient and safe cell sources for regeneration of damaged tissues and organs or treatment for incurable diseases. human embryonic stem cells (hescs) hold two important properties called self renewal and pluripotency. however, the use of ...

spermatogonial stem cells (sscs) are in the beginning of a complex process in which they transmit genetic information from generation to generation. any failure in this process can result in infertility. it has been suggested that transplantation of spermatogonial stem cells, following their maintenance and culturing, may restore fertility in some infertile patients. because fertility restorati...

Azoospermia is one of the challenging disorders affecting couples who are afflicted with infertility. Human testisderivedcells (hTCs) are suitable candidates for the initiation of in-vitro spermatogenesis for these types of patients.The current study aimed to assess the proliferation of hTCs through the cell culture on the three-dimensional (3D) porousscaffolds. Cells harveste...