Table 3

Sample Description	% antigen 1 recovered
Harvest material	100 %
Clarified permeate	70%
1^st diafiltration	25%
2^nd diafiltration	5%
3^rd diafiltration	1%
4^th diafiltration	0.5 %

Table 3: Quantifying the amount of product recovered at the concentration step and diafiltration steps in comparison to the amount of product available in the harvest materiala.