Table 1.

Results showing membrane-impermeable form of estrogens are as effective as their permeable versions.

number of cases	Agent*	effects	Ion Channel	References
26	E2=E-BSA (18); E2=E-HRP (2); E2=E-peroxidase (1); Tmx=EBT (2); Estrone=estrone oximes (1); Estrone=Quat DME-estradil (1); BPA=BPA-Ms (1).	↑ (16); ↓ (10).	Ca (12); K (10); Na (1); Ligand-gated (3).	[9-33]
2	E-BSA; E-BSA-FITC	↑ (2)	Ca-L	[33, 34]
1	E2≠E-BSA	↓	Kv2	[35]

^*equal sign, “=”, similar in action; number in parentheses indicate the number of cases.