Liquid nitrogen or laboratory freezers for storage of samples: several factors affect the choice.
Jaslok Hospital and Research Centre, Mumbai, India. sonabnair@rediffmail.com.
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D015925:Cryopreservation / Q000379:methods*; D006801:Humans; D010314:Partial Thromboplastin Time / Q000592:standards*; D010949:Plasma / Q000737:chemistry*; D011517:Prothrombin Time / Q000592:standards*