. Author manuscript; available in PMC: 2012 Oct 28.

Published in final edited form as: J Immunol Methods. 2011 Aug 26;373(1-2):181–191. doi: 10.1016/j.jim.2011.08.016

Table 2.

Storage stability of GD2

	1 Day	6 Days	20 Days	34 Days
Protein Conc. (mg/ml)	5.84	5.84	5.84	5.84
^*Binding activity (mg/ml)	5.95±0.32	5.64±0.34	No linear range	Not detectable
Relative activity	101.88%	96.58%	-	-

The average and standard deviation from all the test article dilutions used in calculation are shown.

The GD2 binding activity of two lots of ch14.18 was tested on different days by GD2-coated plate ELISA using ch14.18. The same GD2 stock solution aliquots stored at −20°C for different days were used in the assay. The storage time ofthe GD2 aliquots at −20°C is shown.