Assertion: immunoglobulin's fraction | /r/HasProperty | contacted with charged groups
Facets:
value: negatively
type: MANNER
Source sentences:
text: The pH of the collected fraction can be adjusted with an acid solution to a pH in the range of higher than 3.8 and equal to or lower than 5.3 and the fraction can be contacted with the negatively charged groups pre-equilibrated with a buffer having the same pH as the fraction and the unbound fraction is collected.