Table 2. Species Cross Reactivity and Selectivity Binding Data for Fluorescein-Labeled Bicycle 2 As Determined by FP Direct Binding.

	species cross reactivity				selectivity
protein	human Nectin-4 ECD	mouse Nectin-4 ECD	rat Nectin-4 ECD	NHP (Cyno) Nectin-4 ECD	Nectin 1–3, 5 ECD	Nectin-like 1–5 ECD
Kd (nM)	19.4	42.9	91.8	49.2	>2000	>2000