Table 2: EC50 Values of Neurotrophins in the Three Trk Assays

Neurotrophins (nM) TrkA-NFAT-bla CHO-K1 TrkB-NFAT-bla CHO-K1 TrkC-NFAT-bla CHO-K1
NGF 2.5s 0.04 >50 >50
BDNF >50 0.39 28*
NT-4 >50 3.5 >50
NT-3 16* 2.5 0.09

* Values may not be accurate as the curves did not reach saturation.