Membrane-permeant, ratiometric Ca²⁺ indicator.

Excitation:	_340/380 nm_
Emission:	--505 nm______
Kd:	_145 nM______

Membrane-impermeant, ratiometric Ca²⁺ indicator.

Excitation:	_340/380 nm_
Emission:	--505 nm______
Kd:	_145 nM______

Membrane-permeant Ca²⁺ indicator.
Higher Ca²⁺ affinity than Fluo-3 or Fluo-4.

Excitation:	_490 nm
Emission:	_515 nm
Kd:	_290 nM ___

Membrane-impermeant Ca²⁺ indicator.
Higher Ca²⁺ affinity than Fluo-3 or Fluo-4.

Excitation:	_490 nm
Emission:	_515 nm
Kd:	_290 nM ___

Membrane-impermeant Ca²⁺ indicator.

Excitation:	505 nm
Emission:	_525 nm
Kd:	_390 nM ___

Membrane-impermeant Ca²⁺ indicator.

Excitation:	_490 nm
Emission:	_515 nm
Kd:	_355 nM ___