Freezing-thawing hysteresis. I. NMR detection in human lens.
Human eye lenses were investigated by 1H-NMR as a function of temperature around freezing. Wide hysteresis in line intensity and relaxation time has been found. The hysteresis behavior of the phase transition presents a useful possibility for investigating the structure of water in these materials.
D001834:Body Water / Q000378:metabolism; D005615:Freezing; D006801:Humans; D007908:Lens, Crystalline / Q000378:metabolism*; D009682:Magnetic Resonance Spectroscopy; D013816:Thermodynamics