World ' s Oldest Stored Semen Successfully Used to Breed Sheep

TUESDAY, March 19, 2019 -- Sheep semen frozen for 50 years was as fertile as samples on ice for just one year, according to an unpublished Australian study. University of Sydney researchers said they used semen frozen since 1968 to inseminate 56...
Source: Drugs.com - Daily MedNews - Category: General Medicine Source Type: news