Assertion: embryo | /r/AtLocation | liquid nitrogen
Facets:
value: for an indefinite period of time
type: TEMPORAL
Source sentences:
text: Grade 1 and 2 embryos can be frozen and stored in liquid nitrogen for an indefinite period of time.
text: Two embryos were viable, and are now stored in liquid nitrogen, waiting to be transferred into a surrogate mother in the near future, Ol Pejeta Conservancy said in a statement.
text: The embryos are stored in liquid nitrogen to be transferred into a surrogate mother — a southern white rhino — in the coming months.