All tissues are obtained from pools of healthy, fasted animals. Pel-Freez routinely harvests several tissue types and serum from each animal, and can collect any tissue of interest to an individual investigator. Inventoried items are collected within minutes of the animal's sacrifice, frozen immediately on dry ice, and stored at -20 C until shipped on dry ice. Special collection procedures include fresh collection on wet ice and same day shipment by overnight delivery, liquid nitrogen freezing, solution washing, and lyphilization. Custom protocols, such as dissection procedures, matched pairs and age or sex selection are readily accommodated.
Air drying and special packaging requirements are available.
This saline soluble nuclear antigen fraction is isolated from thymus acetone powder. Excess fat, connective tissue, and bronchi are removed. The lobes are blended into a fine powder after drying and used as a source of coagulation factors. This bone marrow, extracted from 8-12 week old rabbits, provides a rich source of ribonucleotide reductase. It can be purified by affiny chromatography to yield at least a 600 fold purification and high enzyme activity.