1. Use of cell-banked monkey kidney cells for for the isolation of respiratory viruses;Beem,1965
2. Recovery from liquid nitrogen temperature of established cell lines frozen in chemically defined medium;Evans;J. Nat. Cancer Inst.,1962
3. Preservation of cell cultures by freezing in liquid nitrogen vapor;Greene,1964
4. Determination of cell viability;Hanks,1958
5. The kinetics of glycerol and dimethyl sulfoxide. Movement in and out of cells during preincubation and washing;Henderson;Cryobiology,1965