Table IV.

Contribution of the K⁺ Conductance to the BLM Conductance of Proximal Tubule

Species		g		NPo		f		A		GK		GBLM		GK/GBLM
		pS						10−8cm2		μS/cm2		μS/cm2
Necturus		31.2*		0.14*		1.0* ‡		1.3*		33.6*		33–59§		0.57–1.00
						0.42*				14.1				0.24–0.43
Rana		5.6‖		0.22‖		0.62‖		1.57‖		48‖		33–59§		0.81–1.45
												51.3¶		0.94
Rabbit		10**		0.06**		1.0††		1.0**		100**		714§§		0.14
Ambystoma		4‖‖		0.20‖‖		0.986‖‖		1.77‖‖		44.6‖‖		51.3¶		0.87

^* From Kawahara et al., 1987; cell-attached at 0 mV;  

^‡ assumed in the calculation in Kawahara et al. (1987), despite finding f = 0.42;  

^§ from Maunsbach and Boulpaep (1984), for Necturus;  

^‖ from Hunter (1991), cell attached at 0 mV;  

^¶ from Maunsbach and Boulpaep (1984), for Ambystoma;  

^** from Parent et al. (1988), cell-attached at −50 mV;  

^†† presumed, since data not given in Parent et al. (1988);  

^§§ from Lapointe et al. (1984);  

^‖‖ present study.