Liquid Nitrogen Quick Freezing of Foods

Quick freezing of mouse embryos by direct plunge into liquid nitrogen vapor: effects of sugars.

Instructions for use Title QUICK FREEZING OF MOUSE EMBRYOS BY DIRECT PLUNGE INTO LIQUID NITROGEN VAPOR : EFFECTS OF SUGARS

Establishment of canine models of lunatomalacia through liquid nitrogen freezing

The aim of this study was to investigate the feasibility of establishing dog models of lunatomalacia through liquid nitrogen freezing. Twelve adult crossbred dogs were divided into three groups. Unilateral lunates were peeled off the parenchyma and frozen to result in avascular necrosis. They were observed dynamically through X-ray, computed tomography (CT) and magnetic resonance imaging (MRI)....

Morphology of heart valves preserved by liquid nitrogen freezing.

As a preliminary to establishing a frozen valve bank for replacement surgery, the possible effects of the proposed freezing and thawing procedure on tissue structure were assessed in 16 human pulmonary valves removed from cadavers at necropsy and nine dog valves obtained fresh. The valves were frozen and stored in liquid nitrogen for intervals ranging from 23 to 380 days. Blocks of tissue cut f...

Freezing and Storing Ditylenchus dipsaci in Liquid Nitrogen.

After 18 months of storage at -150 C, some larvae of Ditylenchus dipsaci, which had been treated in a 7.5% solution of dimethyl sulphoxide and cooled to -25 C before storage, were still viable on thawing. Some survivors penetrated and developed normally in stems of alfalfa seedlings. Tests showed that active larvae could be frozen directly, thus eliminating the need to use the quiescent stage o...