Abstract
The cabinet descr. was designed to accommodate a large number of unstable viruses, making them easily accessible, and maintaining them in a state of unaltered infectiousness. The cabinet contains solid CO2 and cold gas and maintains an internal temp. of [long dash]76[degree]C. Intermittent or delayed study of a given specimen is thus made possible. Use of celluloid tubes eliminates the loss of specimens resulting from cracked or broken tubes, and metal screw caps prevent the unstoppering of tubes due to gas expansion during thawing. The tubes are easily located in numbered racks, and their small size makes them suitable for use in the high speed vacuum centrifuge, permitting direct concentration of active material in the original storage container.