US Patent 12058996 High subzero cryopreservation

This disclosure is related to methods of preserving biological samples, organs, and organisms. This disclosure is based, at least in part, on the discovery that in the presence of heterogenous extracellular ice, endothelial cells have improved attachment and viability after preservation, and particularly by uniformly nucleating ice across the microvasculature using ice nucleating agents, the chance of intracelluar ice formation can be significantly reduced.