Table 1.

Enrichment Data for the Her2-VHH Library

	1st Round	2nd Round	3rd Round
	1 μg rhHER2	200 ng rhHER2	40 ng rhHER2
Input phage (cfu)	5.00*1012	1.00*1011	1.00*1011
Output phage (cfu)	3.74*107	2.20*108	3.26*109
Output/Input	7.48*10−6	2.20*10−3	3.26*10−2