1967
The number of branches containing Gal beta 1 - 4Gal on N - glycans did not significantly affect K ( d ) of mAbs of IgG1 subclasses , but those of IgM mAbs were decreased by ~ 1 order of magnitude , in increments of the number of branches present .
 Chemical: N
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 Chemical: N