Assertion: semen | /r/HasProperty | frozen
Facets:
Source sentences:
text: It was not until the addition of glycerol to semen extenders that semen could be frozen.
text: Semen is frozen using either a controlled-rate, slow-cooling method (slow programmable freezing or SPF) or a newer flash-freezing process known as vitrification.
text: Semen is frozen and supplied to farmers.
text: On the other hand, if the semen is to be frozen, egg yolk may be the nutrient of choice.