Fig. 1.

Cross-sectional MR images of vein networks in ice samples at −13.5 °C for aging to 1730 h after initial freezing. Spatial resolution is 55 × 55 μm over a 14 × 14 mm FOV and 0.5 mm slice. Top: Ice with BSA (10 μg/ml). Left to right (a)–(c): t = 39, 578 and 1705 h. Ice crystal growth from ∼200 μm to 1 mm clearly occurs over this time period. Bottom: Ice with ECP (∼10 μg/ml extracellular protein extract containing an unknown fraction of IBP). Left to right (d)–(f): t = 102, 651 and 1730 h. Inhibition of ice crystal growth is clear over this time period.