Table 3. Invariant Residues, β-Subunit, Common Between Groups.

# Sequences	Group	I	II	III	IV	Anf	Vnf
45	I	70	44	46	54	44	47
18	II		85	48	67	56	58
8	III			96	72	56	67
3	IV				328	97	103
12	Anf					198	128
9	Vnf						171