Fig. 1From: Preservation of allograft bone using a glycerol solution: a compilation of original preclinical researchExamples of bone that have undergone glycerol-perseveration (GBP): a ilium strip with two cortical sides and a cancellous matrix, b cancellous bone block, and c cancellous bone dowel with thin cortical plate. Reproduced with permission from LifeNet HealthBack to article page