The lyophilized antibody is stable for at least 1 year from date of receipt at -20C.After reconstitution with 0.01 M PBS, pH 7.4 or other diluents, this antibody can be stored in working aliquots at 2C- 8C for one month, or at -20C for six months without detectable loss of activity.Aliquot to avoid repeated freezing and thawing.