In recent years. inducing pluripotent stem cells to differentiate into functional primordial germ cells (PGCs) in vitro has become an important method of obtaining a large number of PGCs. However. the instability and low induction efficiency of the in vitro PGC induction system restrict the application of PGCs in transgenic animal production. https://www.markbroyard.com/flash-grab-hobbit-door-on-sale-limited-grab/